The answer for Q2. The deb package:
$ ldd /usr/bin/cin
linux-vdso.so.1 (0x00007f1be24fd000)
libogg.so.0 => /usr/lib/x86_64-linux-gnu/libogg.so.0 (0x00007f1be24aa000)
libFLAC.so.14 => /usr/lib/x86_64-linux-gnu/libFLAC.so.14 (0x00007f1be2442000)
libjpeg.so.62 => /usr/lib/x86_64-linux-gnu/libjpeg.so.62 (0x00007f1bdb769000)
libsndfile.so.1 => /usr/lib/x86_64-linux-gnu/libsndfile.so.1 (0x00007f1bdb6d4000)
libwebp.so.7 => /usr/lib/x86_64-linux-gnu/libwebp.so.7 (0x00007f1bdb646000)
libtiff.so.6 => /usr/lib/x86_64-linux-gnu/libtiff.so.6 (0x00007f1bdb5b0000)
libvpx.so.9 => /usr/lib/x86_64-linux-gnu/libvpx.so.9 (0x00007f1bdb200000)
libopus.so.0 => /usr/lib/x86_64-linux-gnu/libopus.so.0 (0x00007f1bdac00000)
liblilv-0.so.0 => /usr/lib/x86_64-linux-gnu/liblilv-0.so.0 (0x00007f1be2424000)
libX11.so.6 => /usr/lib/x86_64-linux-gnu/libX11.so.6 (0x00007f1bdb0b7000)
libXext.so.6 => /usr/lib/x86_64-linux-gnu/libXext.so.6 (0x00007f1be240d000)
libXinerama.so.1 => /usr/lib/x86_64-linux-gnu/libXinerama.so.1 (0x00007f1be2408000)
libXfixes.so.3 => /usr/lib/x86_64-linux-gnu/libXfixes.so.3 (0x00007f1be2400000)
libbz2.so.1.0 => /usr/lib/x86_64-linux-gnu/libbz2.so.1.0 (0x00007f1bdb59c000)
libfontconfig.so.1 => /usr/lib/x86_64-linux-gnu/libfontconfig.so.1 (0x00007f1bdb067000)
libfreetype.so.6 => /usr/lib/x86_64-linux-gnu/libfreetype.so.6 (0x00007f1bdab28000)
liblzma.so.5 => /usr/lib/x86_64-linux-gnu/liblzma.so.5 (0x00007f1bdb036000)
libpng16.so.16 => /usr/lib/x86_64-linux-gnu/libpng16.so.16 (0x00007f1bdaaed000)
libz.so.1 => /usr/lib/x86_64-linux-gnu/libz.so.1 (0x00007f1bdb57c000)
libvdpau.so.1 => /usr/lib/x86_64-linux-gnu/libvdpau.so.1 (0x00007f1be23f8000)
libva.so.2 => /usr/lib/x86_64-linux-gnu/libva.so.2 (0x00007f1bdaab5000)
libva-x11.so.2 => /usr/lib/x86_64-linux-gnu/libva-x11.so.2 (0x00007f1be23f0000)
libva-drm.so.2 => /usr/lib/x86_64-linux-gnu/libva-drm.so.2 (0x00007f1bdb575000)
libGL.so.1 => /usr/lib/x86_64-linux-gnu/libGL.so.1 (0x00007f1bdaa2f000)
libGLU.so.1 => /usr/lib/x86_64-linux-gnu/libGLU.so.1 (0x00007f1bda9b4000)
libXv.so.1 => /usr/lib/x86_64-linux-gnu/libXv.so.1 (0x00007f1bdb02f000)
libXft.so.2 => /usr/lib/x86_64-linux-gnu/libXft.so.2 (0x00007f1bda999000)
libasound.so.2 => /usr/lib/x86_64-linux-gnu/libasound.so.2 (0x00007f1bda871000)
libpulse-simple.so.0 => /usr/lib/x86_64-linux-gnu/libpulse-simple.so.0 (0x00007f1bdb026000)
libpulse.so.0 => /usr/lib/x86_64-linux-gnu/libpulse.so.0 (0x00007f1bda81c000)
libusb-1.0.so.0 => /usr/lib/x86_64-linux-gnu/libusb-1.0.so.0 (0x00007f1bda7fb000)
libnuma.so.1 => /usr/lib/x86_64-linux-gnu/libnuma.so.1 (0x00007f1bda7ec000)
libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f1bda400000)
libm.so.6 => /usr/lib/x86_64-linux-gnu/libm.so.6 (0x00007f1bda6f6000)
libmvec.so.1 => /usr/lib/x86_64-linux-gnu/libmvec.so.1 (0x00007f1bda307000)
libgcc_s.so.1 => /usr/lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f1bda6c9000)
libc.so.6 => /usr/lib/x86_64-linux-gnu/libc.so.6 (0x00007f1bda111000)
/lib64/ld-linux-x86-64.so.2 (0x00007f1be24ff000)
libvorbis.so.0 => /usr/lib/x86_64-linux-gnu/libvorbis.so.0 (0x00007f1bda699000)
libvorbisenc.so.2 => /usr/lib/x86_64-linux-gnu/libvorbisenc.so.2 (0x00007f1bda066000)
libmpg123.so.0 => /usr/lib/x86_64-linux-gnu/libmpg123.so.0 (0x00007f1bda006000)
libmp3lame.so.0 => /usr/lib/x86_64-linux-gnu/libmp3lame.so.0 (0x00007f1bd9fb6000)
libsharpyuv.so.0 => /usr/lib/x86_64-linux-gnu/libsharpyuv.so.0 (0x00007f1bda690000)
libzstd.so.1 => /usr/lib/x86_64-linux-gnu/libzstd.so.1 (0x00007f1bd9eec000)
libLerc.so.4 => /usr/lib/x86_64-linux-gnu/libLerc.so.4 (0x00007f1bd9e55000)
libjbig.so.0 => /usr/lib/x86_64-linux-gnu/libjbig.so.0 (0x00007f1bda67f000)
libdeflate.so.0 => /usr/lib/x86_64-linux-gnu/libdeflate.so.0 (0x00007f1bd9e3d000)
libserd-0.so.0 => /usr/lib/x86_64-linux-gnu/libserd-0.so.0 (0x00007f1bd9e23000)
libsord-0.so.0 => /usr/lib/x86_64-linux-gnu/libsord-0.so.0 (0x00007f1bda676000)
libsratom-0.so.0 => /usr/lib/x86_64-linux-gnu/libsratom-0.so.0 (0x00007f1bd9e18000)
libzix-0.so.0 => /usr/lib/x86_64-linux-gnu/libzix-0.so.0 (0x00007f1bd9e09000)
libxcb.so.1 => /usr/lib/x86_64-linux-gnu/libxcb.so.1 (0x00007f1bd9dde000)
libexpat.so.1 => /usr/lib/x86_64-linux-gnu/libexpat.so.1 (0x00007f1bd9db1000)
libbrotlidec.so.1 => /usr/lib/x86_64-linux-gnu/libbrotlidec.so.1 (0x00007f1bd9da2000)
libdrm.so.2 => /usr/lib/x86_64-linux-gnu/libdrm.so.2 (0x00007f1bd9d8b000)
libX11-xcb.so.1 => /usr/lib/x86_64-linux-gnu/libX11-xcb.so.1 (0x00007f1bd9d84000)
libxcb-dri3.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-dri3.so.0 (0x00007f1bd9d7d000)
libGLdispatch.so.0 => /usr/lib/x86_64-linux-gnu/libGLdispatch.so.0 (0x00007f1bd9cc4000)
libGLX.so.0 => /usr/lib/x86_64-linux-gnu/libGLX.so.0 (0x00007f1bd9c90000)
libOpenGL.so.0 => /usr/lib/x86_64-linux-gnu/libOpenGL.so.0 (0x00007f1bd9c65000)
libXrender.so.1 => /usr/lib/x86_64-linux-gnu/libXrender.so.1 (0x00007f1bd9c56000)
libpulsecommon-17.0.so => /usr/lib/x86_64-linux-gnu/pulseaudio/
libpulsecommon-17.0.so (0x00007f1bd9bcd000)
libdbus-1.so.3 => /usr/lib/x86_64-linux-gnu/libdbus-1.so.3 (0x00007f1bd9b76000)
libudev.so.1 => /usr/lib/x86_64-linux-gnu/libudev.so.1 (0x00007f1bd9b30000)
libXau.so.6 => /usr/lib/x86_64-linux-gnu/libXau.so.6 (0x00007f1bd9b29000)
libXdmcp.so.6 => /usr/lib/x86_64-linux-gnu/libXdmcp.so.6 (0x00007f1bd9b21000)
libbrotlicommon.so.1 => /usr/lib/x86_64-linux-gnu/libbrotlicommon.so.1 (0x00007f1bd9afe000)
libsystemd.so.0 => /usr/lib/x86_64-linux-gnu/libsystemd.so.0 (0x00007f1bd99e5000)
libasyncns.so.0 => /usr/lib/x86_64-linux-gnu/libasyncns.so.0 (0x00007f1bd99de000)
Rpms should be the same.