Originally Posted by SeeBuyFly

The questions have already been answered but I wanted to say it a little differently.

You are talking about PNRs, but that is irrelevant. Every airline always uses own PNR. What is important is whether you bought these segments all at once or separately.

If you bought international and domestic separately, you may have saved some money on the ticket but you bought yourself luggage transfer hassle as well as excess baggage costs.