Or this is all we're gonna get to see of the battle that actually does happen, like how the Troll's session's climax was only vaguely talked about, or how the Beta kids' tearful reunion was skipped entirely - twice...
What I wanna know is how/why Gamzee is in half again suddenly (doomed timeline?) and where the bunny went during the fight. And whether John later using the juju releases the souls of future him and the other other Beta kids (i.e. so they are no longer homestuck). But the only thing we can really expect to see in the last part is the conclusion of Jake's hope-splosion and the forehshadowed fate of Lil Cal - potentially linking to this thing Caliborn said much earlier about Dirk's B2 Cal:
uu: I CAN'T EXPLAIN IT.
uu: BUT WHEN I LOOK DEEP INTO HIS EYES.
uu: I CAN FEEL HIM OUT THERE.
uu: IN LATER STAGES OF HIS LIFE.
uu: BY WHICH I MEAN.
uu: I CAN FEEL *MYSELF*.
uu: THROUGH HIM SOMEHOW.
uu: AS IF MY ESSENCE WILL ONE DAY BECOME.
uu: ENTANGLED WITH THE VOID.
uu: AND THEN MYSTERIOUSLY ACCESSIBLE.
uu: THROUGH MY SOFT HAPPY PAL.
Although interestingly, Dave's Bro's B1 Cal is the "later stages of [B2 Cal's] life", so maybe rather than Gamzee making him appear in Dave's Derse (which was only said, but not shown, to begin with), time shenanigans are afoot here too...
uu: I CAN'T EXPLAIN IT.
uu: BUT WHEN I LOOK DEEP INTO HIS EYES.
uu: I CAN FEEL HIM OUT THERE.
uu: IN LATER STAGES OF HIS LIFE.
uu: BY WHICH I MEAN.
uu: I CAN FEEL *MYSELF*.
uu: THROUGH HIM SOMEHOW.
uu: AS IF MY ESSENCE WILL ONE DAY BECOME.
uu: ENTANGLED WITH THE VOID.
uu: AND THEN MYSTERIOUSLY ACCESSIBLE.
uu: THROUGH MY SOFT HAPPY PAL.
Although interestingly, Dave's Bro's B1 Cal is the "later stages of [B2 Cal's] life", so maybe rather than Gamzee making him appear in Dave's Derse (which was only said, but not shown, to begin with), time shenanigans are afoot here too...