Originally Posted by quinzinho

This is absolutely a wrong assumption. QR will not give a damn and will only rebook you to an AMS-bound flight, like it or not. Yes, I'm speaking from experience. In 99% of cases any airline will operate like this, by the way.

Originally Posted by Johnnieboy

I may be wrong, and someone over at the BA forum could probably confirm, but I think that once you are checked in for the BA flight (which you would be from DPS if your bags are tagged through), BA would have to offload you before you could then change to a later flight (so perhaps not so easy to arrange mid-flight DOH-AMS). It's simple if you are already planning to go landside at AMS and check in separately for the BA flight, less easy if your bags are checked through and missed the flight that they were already tagged for. It may not be easy/possible to have them retagged at AMS without collecting them and going landside to check in again for the later flight. And retrieving mis-tagged bags may take a while, particularly at AMS...

That said, I would go for it, there should be plenty of time but there is, of course, always a risk. That risk is the potential price of using separate tickets to achieve a cheaper itinerary.

Originally Posted by brunos

I am utterly surprised by your statistics.
In my many decades of flying, I have had my fair share of serious IRROPS.
On a paid J ticket, airlines will always try to re-accommodate you on some other flights in case of full-day delay due to them. For QR, the likely reroute to AMS is through LHR (and BA LHR-AMS). And I would strongly doubt that they refuse to fly you to LHR rather than AMS given their fault.