Turns out that I can't use both Wifi and Bluetooth simultaneously on my Omnia 7:
- when Wifi's on, Bluetooth does not detect my devices (my wireless sound bar, for instance)
- when I turn Bluetooth on first, then connect to a wifi network, Bluetooth disconnects
I encountered this issue when using 7.5, but still the same with 7.8RTM (XDA Dynamics 2.0). I honestly do not remember if it used to work with previous roms / WP versions.

More info: my home wifi network uses the 2.4GHz band (can't switch to 5GHz as some devices do not support it, while I guess it would solve everything).

Anyone encountering the same?
I searched many forums but didn't found anything approaching... Sorry if I missed something.

Thanks :-)