It'll become clear to Codi that Tech isn't meaning to follow, this time. At least not as directly, anyway. He does back up as he continues to watch out for any attention he may have drawn, and indeed there are Sylphid who have taken notice of their freshly downed comrades.

The lingering effect of Codi's spell at least makes it difficult for them to pinpoint his position right away, but it becomes clear enough to him when he's out of range. Tech takes full advantage while it lasts in order to thin out as many of the soldiers as he can. Time to join the fight.