[quote=@Sep]
<Snipped quote by Bounce>

Someone translate I'm old. Is 6-7 just  new way of saying 10-4
[/quote]

Depending on usage it can mean absolutely nothing or "so so" or "this or that" (usually with an up and down gesture like juggling), but I was using it more in the "this or that" context.

This is by an "OK [s]Boomer[/s] Gen-Xer" who is relying on internet research, so your mileage may vary.