I can now answer the question myself; it is compatible with my TV (since my TV does not support HDMI eARC, however, I have to do without lossless Dolby Atmos, but not Atmos content per se -> HDMI ARC connection available). The wireless connection of the speakers is stable, I haven't had any interruptions in the connection or sound problems yet.

We are very satisfied with this sound system - works perfectly with our TV