I performed a new installation to see if different choices could be made during the initial setup. I have thus found that, by choosing, as always, the simple mode, downwards there is also the selection of the input (1 and 2). By default there is 1 on both tuners. I changed by putting "2" on the second, and I could see that the PIP is activated and I think the recording should also work. I check afterwards, but I have no doubts.
I would like to thank urie for urging me to check the options again.
I hope that the team will also make some speeches for Dreamtwo, for the things I have reported.
Edit: I can confirm that it works.
Edit 2: After closing the PIP, it is no longer possible to reopen it. The decoder needs to be restarted in order to be reused. I think we still need to act if we want it to work properly.

