으니까 넘어가다

since X, let's move on

"-(으)니까" gives the reason and 넘어가다 means to move past something. Most lines here are a host skipping ahead on air: the mood is getting odd so I'll skip it, that's settled so let's move on, there's no time so we'll move along, it's embarrassing so we'll pass. The other reading is letting something slide rather than pressing it — we could at least say hello to each other, so I let it go; he's cute, so we'll let him off.

Register: conversational, often a host speaking