At 3:15, it sounds like delay and flanger or chorus? I don't know. I don't use effects much. I usually hate when people layer dirt with effects but it sounds good to my ears.
Though, with the right flanger settings, you can get a pretty good chorus sound - Andy Summers did this on Police records regularly with his Electric Mistress, and I recreated that for a recent review:
Guitargeek diagrammed his rig a while back... it's basically all rack stuff live, no idea what the studio might've been.
Les Paul on the bridge pickup, a carefully dialed in light chorus with the depth down and the rate up, and a nice analog-flavored delay oughta do the trick.