I've just installed an update on one of my boxes whilst watching the other and also had a recording on the other box
I lost the TV signal whilst the box updated and rebooted, and not for the first time. This will mean a gap in the recording and was also annoying to miss a portion of the programme I was watching.
Why does RF loop through have to be activated and why is it deactivated during reboots?
I suggest it should just pass the signal through at all times.