In American English, pauses are almost always mechanically/syntactically determined and carry no meaning, but increasing the volume for a given word shows emphasis. This EASILY leads to extreme and sudden misunderstandings in both directions, as each side sees very obvious sarcasm and emphasis where none was intended. They're both sure they're right and that they are speaking the same language, but outside of print, these are two separate languages.
Since it's more recent, the Northern Indian English vocabulary has a cleaner logic, so personally if I had to chose just one, I'd go with that, but that's neither here nor there.
Long years ago, I attended a lecture by, I believe, the first scholar to experimentally demonstrate this and publish it; and the recorded examples of ordinary real-life interactions (not staged) taking place in British businesses that he used to illustrate the lecture were extremely striking; in fact very explosive.
In case this seems like something anyone would notice - in fact it's beneath notice. Similarly, the semantic use of tones in Chinese was denied by scholars there for something like hundreds of years, before finally being acknowledged. Language is handled unconsciously for the most part.