See, Lantz, that's because at the time, Jack was outside after nearly getting killed by Ruu. He then moved inside, which I showed in a post. At the time he and Nessa went inside the garage, Satoshit was still outside. So. If he went inside, he should have ran into the pair of them. And he seemingly gives no fucks about a dude with half his ribcage sprouting from his chest.
What a kind, caring, and heroic individual.