Speculating where the Formerly Living 7odd left off, was the horde of zombies and the Behemoths approaching the Hospital lead there by TOWTM or were they CHASING him?

After Riley shoots him with the arrow, Kalani wonders out loud why he didn't call others. Then as they are escaping he asks the question again with an emphasis that the audience is supposed to take note of this fact.
So, if they were chasing him then he probably wouldn't want to call them to him. This seems like the second time he didn't call zombies when he could have used their help. The first was when he entered the Tower. He called others after Duncan let him into CJ's Dunbar, but after he gained entry into Micheal's Tower he just knocked on an apartment door like he was passing out religious pamphlets.
TOWTM was seen directing the zombies during the War, after the Mallers were chase off, BUT there was no Behemothian Rapshody as they were not present.