Good stream.

Question #1: Without naming specific companions (we'll use Companion Bob), did I understand the stream correctly and that the below is a possibility:

Companion Bob was a classic Companion. In KotFE, Companion Bob does not return story-wise. Despite that, I can still summon Companion Bob for adventuring purposes.

Is the above understanding correct?

Question #2: Will any new companions have conversation quests?

Question #3: Will any old companions have new conversation quests?