Partly about figuring out the chemistry. Mostly about having to manage two men short AND working around GG's idiocy. He's already down a forward, so what does he do? He shortens his bench even further, only playing 5 guys with any kind of regularity (the line that scored both goals was getting ~12 minutes today). The players missing from the blueline are also throwing everything out of whack. At full strength, not only would the Rangers have 6 defensemen instead of 5, but one of their current 5 guys would be the #6 d-man (Mikkola), and another would be scratched (Harpur). Right now, I think the team is just trying to get through this mess (to be fair, a mess largely of their own creation due to cap finagling and K'AM's spitting incident), and then worry about finding the chemistry later.
I HOPE that GG over-played the 5 guys at the top to help them start finding that chemistry (since he knows the kid line already have it), but knowing him, the new shiny toys are just his latest excuse to use one of his more effective lines as a 4th line.