Except for his submission defense...
he just did the correct move to escape the triangle, AS forced the triangle position with elbows from the bottom and locked in a triangle when the oppertunity prestend itself
when that happened chael did the correct escape, but in the 5th round and the way he was fighting he was obviously not 100% focused so he forgot about the arm, he always loses focus in his fights
if he fought again he would do the exact same escape and still get subbed
i cant believe there actually are ppl who think he doesnt know how to escape a triangle