"In an ideal world" I presume that the torch, or banner in this case, could be hand-carried by someone from the previous venue. That person would then participate in the performance at the next venue. Thus, some of the energies would be passed onto the next group.

That was my picture of what it might be like. However, as in so many things, real life can get in the way of doing stuff like that. So I guess mailing the banner is as close as we can get in most cases.