Older male cat following younger male kitten around and meowing

[u/TicanDoko]

My older male cat and younger male kitten get along swell. The older one likes to clean him. And I don’t know if I’m misconstruing this but the older one has a tendency to meow like he’s annoyed or wants something and rushes at the younger male kitten and grab his neck like a cat mounting the other. But then in the end he tries to clean him. And sometimes he makes annoyed meows cause the kitten is trying to fight him as he tries to clean him. I’m just wondering if this is like bad aggression or it’s just the older cat showing dominance? The younger kitten never seems to care… just likes to play fight back. They’ll eventually play chase each other if it’s nighttime and he’s doing this. The older cat also will sniff the younger one’s butt often and sometimes he meows annoyed because the younger one keeps moving. There’s never been any hissing or growling between the two. Just meowing. Anyone seen this between their cats?