First half I thought Celtic played some decent enough stuff to be honest. 2nd half was a completely different story where Rangers tightened the grip on midfield and Celtic did nothing of note.
Aiden was quiet as you rightly say but he got a few decent balls in.
Lets face it, its not unusual for a game between the top sides in any league to be a dull affair, look at 'grandslam sunday' for example;)