This is what makes us F/As look stupid.
This has nothing to do with a "block" of flying, which,'Bother Way', is a term that is exclusive to US Airways (East). Everyone else in the industry calls this a LINE of flying.
This block is a physical thing that has to do with parking an airplane at a gate. You know, the big thing with wings? They are allowed to fly and park anywhere, regardless of who crews them. The PHX hub (as in the airport, not the domicile for F/As) is painting parking places for the 767 in preparations for diversions on the HNL flight.
It's not all about F/As and our scheduling system for crews. 🙄