Wow. I think your friend and your boss need to make their plans more realistically and understand you can't be in two places at once, no matter how hard a lot of us try!

I believe the last flight of the day from ATL is to TLV but it's still around 10:30pm or 10:40pm I think.

If there were some way to get to ORD or JFK in time for one of the daytime flights to LHR, that would work. But I don't see that happening either within those time constraints.