Thanks all. I’ll see what Booking.com say again…so far they’ve just said it “depends on the airline ticket T&Cs”, but nobody can actually give me a copy of those!

I got a few refunds very easily from my card company on flights booked via agents during Covid so was hoping for similar this time.

So in essence, only way I will find airline ticket policy in relation to involuntary reschedule is from Booking.com / Gotogate?