Tying dialogues to Short Rest is mechanicaly impossible ... i thought we are allready beyond that, since it was repeated at least dozen times. O_o
No. This is nowhere near mechanically impossible and repetition wont make that claim any more true. There are many implementations that would enable this: short rests taking place at base camp, dialogues during short rests taking place at base camp, dialogues during short rests happening in the main world, dialogues during short rests happening in their own short rest pocket dimension, etc. Each solution would require some amount of work from Larian, but work does not equate to impossibility.
Also, the goal is to *untie* dialogues from anything. You should be able to talk to your companions nearly everywhere, without having to commit to take a long or a short rest.