That's what I thought too but I keep analysing it and I can't figure out 100% if he's asserting dominance because he knows Ewan should be captain and is keeping him at a meta bay of some sort... Or if he's genuinely into him and his speech was his way of encouraging him to take action against the current captain... I find both equally mediocrally interesting but if the author built a different drive for that character that'll somehow lead us to the scar's back story and interlink in an unexpected way then I'm so game for that
I'm pretty sure that older larga likes (romantically) and would rather be with Ewan than his current master. The biting on the hand seems like a "marking what's mine" situation. Ewan said he never liked him but then thought back to when he was being comforted