I'll try.
When working through a duplex repeater, I noticed the following:
1. People are talking in TS1.
2. I go to TS2 to make a private call.
3. As soon as I select a contact for a private call, the radio starts broadcasting what is happening in TS1. TS filter enabled, DMR filter disabled.
4. Exactly the same thing happens when you call TG 4000, TG9, TG1, PARROT on the screen.
I hope that's clearer.