User blog comment:Lia Schiffer/417: Deicide 19/@comment-1432572-20100826164955/@comment-1393830-20100826181527

No it is not a consistency re read what Isshin said, he says while he was in that form(chrysalis) he could not sense his reiatsu. This was only for the chrysalis form. When he hatched, everyone could sense his reiatsu again. We do not know why Aizen can't sense Ichigo but remember, Aizen said he can't sense anything from Ichigo not just his reiatsu