Is this ghosting or did the conversation end?

I (22F) like this guy (22M) who works with me at one of my college's clubs. I had a suspicion he liked me because I catch him staring at me and there's just this tension between us when we talk. Anyway I want to apply for a position on the board next year and I asked him to apply also. I sent these messages in Slack by the way so it felt like it was for more professional reasons.

But I feel like he ghosted me today. It's been 9+ hours and still no response. On the other hand, does this require a response? Is there a chance I'm just thinking too much into this?

This was our convo. Mainly just playful banter:

Me: "You should apply for a place on the board because I’m not loving the lineup so far 😆"

Him: "Hey [my name], omg I’m flattered to hear this lol. I won’t be in [our city] next semester though so I wouldn’t be much help as a member. Will you be on the board?"

Me: Maybe! You should storm the capitol while you're there

Him: "I think you'd have to deal with some serious fallout back here if that were the case."

Me: "Not if you're discreet enough... sounds like a skill issue."

Him: "Bruh you’d have to be some special type of Marvel superhero to pull off a trick like that."

Me: "Ever wonder why you’ve never seen me and the Hulk in the same room?"

Is this ghosting or did the conversation end?
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