[BNM] SWF communication problem?

[Beathut]

Hi,
    I'm setting up some dual banner ads to run on a games website. I'm 
wondering if there is a way to get the 2 swfs to communicate to each other 
so that they wait till both are loaded before playing,. That way, i can have 
animations running accross both in sync. A but like this tomb raider one:
http://www.eurogamer.net/index.php?filter=PC

There is a class called LocalConnection which appears to do quite complex 
communcation, but i was hoping there is an easier way....

anyone done this sort of thing before?

Tim