Thanks to the people who responded, albeit with not-good news.
I've now booked my March-trip with a competitor, and will probably also book my June-trip with a competitor, whenever a sensibly-priced/good-connection option pops up with an alternative airline.
Regrettably this ongoing exhorbitant-pricing policy will have lost yet-another previously-loyal customer from QR, I understand a slightly-higher price during the Covid-recovery period & while there is peak-demand due to the football, but I am simply not prepared to pay DOUBLE forever !
Goodbye Qatar Airways !