Patch Request: Deep Modulated Pad

Hi,

I am trying to recreate this PAD on DIVA. Link below, comes in the track starts at 1:25 and the filter gradually open on it.

So I tried a saw wave with a 24dB low pass filter applied so none of the high buzzing frequencies of the saw come in. ALso put an envelope on the filter cutoff with a slow attack and quick decay. I think this pad is a chord, however its pitch changes which has me confused. Is it two chords played in succession with legato on? Seems to be the same envelope, it doesn't re-trigger

Can hear it clearer in the breakdown at 3:45

Also there is some sort of LFO being applied to Volume or Filter not sure. My sound didn't really come very close.

Need some help on this. I think a second set of ears is required.

THANKS