Hello, I can't answer you about this specific model. I can however say that a sound bar, whatever its make or model, is compatible with any device having classic sound/video inputs such as HDMI.
I don't know the Sunrise tv box, but with the Swisscom tv box there were various options.
For example, you can connect the 3.5 mm jack plug directly to the tv box and deactivate the sound from your tv.
Disadvantage: the sound only works when it is running via the tv box.
there is also a second variant with the optical cable if your tv or tv box from sunrise has an optical input.
but if you only want to use the bose remote control, there is a youtube video:
https://www.youtube.com/watch?v=MIaD5PALZkA
Yes, that works. I have it myself sm tv and never have to switch it on separately. But you can also change the device (e.g. so that it plays music from the mobile phone). By default, however, the boxes always turn on with ddm TV and I haven't set anything special, just connected them ;)
Yes, this is possible. Of course, the best way is via optical audio output (TOSLINK) or stereo via 3.5mm audio output, if your sound card/mainboard supports this.
Unfortunately, this cannot be achieved via the connection - but you can programme the Bose remote control so that you can control Swisscom TV with it or vice versa (if this is still possible with Swisscom TV). If it has to go via the connection or HDMI CEC, you need a soundbar that has HDMI.
I can't say exactly, I have a Sunrise TV box connected to the TV via hdmi. My TV has a toslink output that I connected to the bose. This works because the sound is transmitted to the TV via HDMI.
Works automatically and without problems for me (iPhone), but I can't say how it is with other devices.
In general, I am very satisfied with the soundbar.