I think it would be nice if we could specify a timeframe (for example: 3, 5, 10 seconds) or a chat line count delay (for example: 3, 5, 10 messages) in the AI Character Designer settings, so that chat messages could be stacked or grouped in bulk and then sent to the AI Characters.
This would basically simulate a delayed response of all that was discussed within the timeframe, to help give room for ourselves/others (in the future) to contribute more than one line at a time to a conversation before the character responds, as well as make the interactions more realistic.
The current format operates on a per message basis usually, which can be too fast and spammy.