Great day and thanks to both of you for your reaction,
Yes exactly Yaobing and this is what i was referring to:
When you use UP or DOWN arrows to show OSD, one of the things displayed is the "Program Info". If you are recording, the program name has the red icon to indicate recording is going on. While the Program Info is in display, you can use LEFT or RIGHT arrow to display the info on adjacent channels. Pressing OK/ENTER while the program info on an adjacent channel is shown will let you change to that new channel, provided you still have an idle tuner to handle it.
I do agree the GUI is very consequent and handles within the same way no matter what's playing. Extremely well done.
The specific case I'm mentioning:
a/ Playing a recording.
b/ Due to the exact same layout and content displayed of the "Program Info", it could seems one is watching the program 'live' and so would be able to change the channel.
OK, thru, it gets clear when the channel doesn't change, 100% agreed. But could indeed also mean you've run out of resources.
Maybe a more distinct icon which indicates On Air or Live could make sense ?
Nothing of a big deal, maybe it could bring a more clear indication.
Thanks again for your help and have a nice day both of you.