If you believe in this sort of thing, perhaps the two events were somehow connected on a spiritual plane. I mean they were all friends or at least friendly, etc. So, maybe Warren's spirit passed though Atlanta on the way to the beyond!! I can't say this theory can be disproved any more than it can be proved
Also, did anyone else catch Stevie's "new" movement during GDW. During the "running in the shadows" part she would sort of take her left hand and put it up to her chest and then make sort of a sweeping movement while swinging her arm down and then pointing to the left a few times. I do not remember seeing that one before.
Also, during SYW, she clearly played with the crowd during the lasso movement thingee.
Finally, who did she point to and seemingly wink at in the first row center at the beginning of the show either right before or right after Dreams?