Wow...this is EXACTLY what I needed! Thank you, CloudGazer!
must be strapped in place ensuring that the adult lap strap buckle does not lie directly over any part of the frame or under the structure of the car type seat after tightening.
I was very worried about this because I'm using a Cosco Scenera NEXT car seat (flying from US) and the buckle will likely be right under the structure of the car seat frame. I actually read that the buckle will be in the middle of the baby's back when forward facing so I was trying to think of solutions for this. My last resort would have been to twist the male end of the belt many times to shorten it and hope it worked.
For my fellow Americans, I found this page that has part numbers for OEM belt shortening clips from automakers that are specifically made for old cars. For your child's safety, you should use one of these for belt shortening and NOT a locking clip. It also has an instruction video on how to use them.
https://www.saferidenews.com/2019/01...-to-find-them/