Yep. Ended up solidly in the middle of the 5-6 hour window, a decent sweet spot in the inconvenience / compensation balance. Certainly a much better silver lining than a potential 4:45 delay that only yields $50.
A replacement part was brought in from Long Beach. It was installed and tests were underway, but before that was completed a second aircraft became available.
What surprised me is that no crew member, either at the gate or on board, announced the credit policy per the Customer Bill of Rights.