Hello
I have been using the set for some time now. Fortunately: Unpacked, plugged in and it worked straight away!
- I only made the settings for the subwoofer via the remote control.
- Also switching on/off via the FB
- no problem with the TV switching itself on
So it must be more to do with your configuration of the TV settings.

Hello,

If you connect a TV set that is compatible with the HDMI control system via an HDMI cable, you can
control the speaker system together with the TV set. To do this, please activate the settings
of the HDMI control on the TV set that is connected to the speaker system via an HDMI cable.
is connected to the speaker system. By default, the control for HDMI on the speaker system is set to [ON].
There is no app for this.
The system should not normally be switched on automatically. The automatic switch-on of the TV and system
and system could be related to the standby settings. Please check whether a switch-on timer is activated.
You can find more information on our support page.


Sony Europe

to 1: I think so, although you can omit the additional remote control if you connect it via (e)ARC, then you can operate it with the 'normal' TV remote control (at least the volume).
to 2: I only know the case that when I pause the TV and after some time the sound system switches off by itself, this activates the TV speakers