If the Chargers were going to head to Los Angeles, they needed to announce it the day of, or the day after, the NFL approved the Rams and the Inglewood project. Each passing day will only make it that much harder to build any kind of fan base in LA.
But at the same time, the Chargers dragging their feet over Los Angeles keeps the Raiders from jumping on the opportunity. And they might focus their attention more on getting a deal done in Oakland, rather than wait for the possibility of the bolts balking.
So keep on stalling, Mr. Spanos!