I think the timing changes for the winter schedule, so past October 26th.

When Qatar operated the route themselves, they departed Doha around the same time as JAL but they did seem to use about an hour less of flying time than JAL does now. I can see my arrivals were around 22:30 to 22:50 on the Qatar operated flights. But that may have had things to do with airspace restrictions and routes being different now than back then.