You don't have to be in the corner for that reverse arrow stun combo to connect. And i think that reverse arrow combo is possibly the best combo to go for if you get a stun (you can add dash cancel, tags or meta cancels wherever you see fit from it.)
The second part of the combo is the least practical combo in this game so far. For one, i've only got the 236A+B link to work on Eva (haven't tried many characters though), it is REALLY strict on the distance. The whole time when she was stunned i was just positioning myself so that it would all combo. Plus it requires multiple super stocks and a dash cancel if you want to continue it.
2A, 5B, 5C, 2C xx 63214C -> dash f.5A, f.5B (arrow hit), 2B, 5B, 5C xx dash, 2B, 5B, 5C, 2C xx 623C (stun) 63214C, 2B, 5B, 5C xx dash, 2B, 5B, 5C 2C xx 623C
Meterless setup into combo. Could add a meta cancel in there if you want.
Unrelated:
Ougon Musou Kyoku - Lucifer & Eva - 4.4K
http://www.youtube.com/watch?v=78v9gaM4s1E