I agree with previous posters that you and your husband were raised at opposite ends of the conversational spectrum. For general conversation, I find a semi interrupting style easiest. This means you interrupt the person, but not the idea and you rarely finish a complete sentence.
So I'm thinking about new curtains..
Oh, in the living room or the whole house?
Just the living room. It would brighten...
Nice idea what colour..
I was thinking about pink or..
Pink is nice. Were you wanting something to match the rose
In the above case, the interrupting shows enthusiasm and engagement.
If someone was talking about something important or emotional like a job choice, health problems it relationship issue, then I think it's better to switch to a more pause and respond mode where you consider what they say.
Ouch . That would shut me down after "brighten", and I'd probably change the subject. I think everyone's right; it's a different style.
Someone upthread mentioned ethnic or regional differences; I was raised in a large city from Scots-Irish ancestry; my husband's family is all from rural Appalachia. That's an interesting idea.
Me too, I'd be rather annoyed by that.
With people I'm close to I will say, especially if they ask me a question but don't give me a chance to answer (and the question was not rhetorical), "Did you want an answer to that question or not?" or if I'm really annoyed, "Will you let me talk yet?"
With those I'm not close to I will just be quiet and eventually they'll take a breath and say "Wow, you've been quiet."
I can understand what OP would mean by pauses. I wouldn't say it's necessarily a bad thing. I take part in a discussion group at my church that's held between services. A bible study, really and often the woman leading it will bring up something that occurred to her while reading a passage, then ask us for our opinions or experiences.
Sometimes there are pauses between people's answers because either the person said something profound and they're chewing it over or they just haven't had enough caffeine yet.
Or sometimes there's no pauses because it's something we all have something interesting to add but there's no talking over each other.