Originally Posted by
Often1
You are entitled to a refund. The current schedule brings the connection below MCT and must be rebooked. You need not accept a rebooking and may therefore have a refund.
A change that drops below the MCT is itself considered a schedule change and is eligible for a refund, not necessarily because the OP refuses a rebooking (although that is a valid option if the OP desired).
E. Any change in the arrival time of an Alaska flight that results in a misconnection to any flight shown in the same reservation and Ticket.