I've worked on not interrupting people for my entire adult life. I get excited when listening to a conversation and want to start the ping pong of back and forth. This comes across as not listening and rude, when I actually am listening and am wanting to throw out prompts for more information. But, now I tend to just let a person go on.
To address your point, there could be a couple things going on. If you're packing so much information in short sentences people may be looking for spots to ask questions. Something I've been doing for awhile is to put almost awkwardly long pauses before moving on to another idea so people have the space to a) recognize the pause and b) time to jump in. If you're talking really fast, people may not see space to interject. If you don't want to do pauses, simply ask others for their thoughts.
To address your point, there could be a couple things going on. If you're packing so much information in short sentences people may be looking for spots to ask questions. Something I've been doing for awhile is to put almost awkwardly long pauses before moving on to another idea so people have the space to a) recognize the pause and b) time to jump in. If you're talking really fast, people may not see space to interject. If you don't want to do pauses, simply ask others for their thoughts.