I’m curious even with the different ways of stressing syllables if there is also a causal link between population density and speaking speed, similar to walking speed differences measured in rural and urban environments. Like if there is some mechanism like walking quickly to get through timed crosswalks vs larger group conversations with less time to get your point across or jump in without interrupting.

Edit: I also noticed as an English only speaker when speaking with Indians who speak English and one or more Indian languages they will sometimes repeat the last sentence you say as you finish saying it as a way to jump into the conversation or indicate agreement or having something to say but I’m not sure if that is culturally Indian or more broadly Asian, etc. if anyone has some insight into that language style.