I have just run into a similar problem as many have described here.

A 1 hour 45 minute schedule change on DOH-OSL caused a misconnect on a OSL-LHR connection I have. According to QR this is only a minor schedule change, so I have no rights to rebooking, refunding or anything. Clearly QR has some different policies to other airlines, but I think a 1 hour 45 minute change less than two months prior to departure is not "minor".

GoToGate could not care less and QR has told me to contact GoToGate. Another good reminder why one should never book with GoToGate unless they have another "special" sale.