IDK if there is a limit to the permutations but the two instances have all been 3. This time though, the drafts were not displayed in small icons. It was displayed instead with a view more drafts down arrow button. BARD was much faster again, even with 3 drafts.
Chat BOTs - relating to the question of multiple responses. Geoffrey Hinton (U of Toronto and also Google fellow) talks about it during extended interview, Covers range of topics and origins.