Spent four hours, up 'til noon, in the Bijou Cage. Bijou paused twice, both times for about 4 minutes. Water rose in Mastiff, but not even enough to be considered a bathtub. (My definition of a bathtub is when there is water visible in Mastiff while seated at the bench. It's a lot more objective since eye level for most people is within a inches of the same height back there.) The second long pause happened just about the time Grotto quit, without having an eruption of Rocket.
During all that time Mastiff was surging nicely from the southern/back vent. Enough to keep a trickle of water running down the front of the platform. On several occasions, it looked like Posthole and Feather had water visible in them. I'm taking all this, especially the lack of frequent one minute long Bijou pauses, as a sign Giant is several days away from the first hot period this interval.