It doesn't sound like anything unusual, from what you've just said. Sometimes one cat will want to play and another one can't be bothered. Maybe that's what you witness sometimes.
Mine do that on occasion. You'll see the one jumping at the other, goading her in a sense in order to get her to react, to move, to play, go outside, etc.
Most times they bounce off each other well, but there are times when one doesn't want to be bothered and they get up and move away, go hide, go to me, to another room, their bed, litter box, whatever. Thing is if they act out and swat at the one that is pestering it might be misunderstood for "game on!"
I see evidence most mornings. Something goes on in the night that involves a little action LOL. I know there are times Sadie will try to get on my bed and Belle believes the bed is solely for her so you have one of those little sibling tiffs and they scrape and roll till they roll off the bed and fall on the floor. Then they both run out of the room. LOL
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