There really is no set scenario. Pretty much every time I’ve flown with bikes and kayaks, a different approach has been taken and it depends on who is on the counter you walk up to.
Mostly I have flown in groups and so whoever has the lightest bag we get weighed first. Several times they have just assumed that the rest of the bags will be about the same and just weighed the first.
I always wrap my clothes etc around the bike to show they are part of the packaging. I’m not really sure why they don’t like clothes in the bags but to be honest I have never been checked.
Smile sweetly, be very polite, what could go wrong?…