Quote Originally Posted by Penner View Post
How long did Ichigo actually train in his little "time tunnel" in real time?
Isshin said he could hold the thingy for 2000 hours, the hyperbolic time chamber is 2000 times as fast as outside, so about 1 hour.. Isshin was out of spirit power when they arrived in this ep, so it should be around that long..
Isshin explains this in ep 302, in case you want proof.