How's Ed making all the layers of the looped riff at the end of You're all I need live from the basement?

The only looping that I hear on live performances of the track are done by Jonny with his Akai Headrush, but those begin closer to the middle of the track (right channel, 2:35). He plays them all live.

Ed basically just holds long sustained notes, I don’t hear any looping. However, those are made using his EBow along with several effects. To make the sound swell in, Ed very subtly raises away from the strings between notes (but my enough to mute the slides completely). However, this does not seem to account for the length of the “attack” of the swells, so I suspect that he might have a delay with the mix set to be mostly wet, such that the initial sound is quieter. He also might have a second delay as well to smooth things out between the two. It’s hard to say how many delays are used, since the EBow blurs repeats, but there’s definitely some delay, as that smooths the decay of the notes and gives extra richness to the sound. He also has distortion to thicken the sound, but he’s using the neck pickup and probably has the tone knob low, which is why the sound is dark and smooth (sort of like the Ondes on some settings), rather than rich in upper harmonics.