It does not make sense by any stretch of imagination. The whole thing, it's nonsense.
What we are seeing is a cold-war type patent race. I am no expert, but Motorola must have some serious patents in it's kitty. Integrating the 2 companies is gonna be a nightmare. All you know, free Pizzzas added to the Motorola overheads might make the whole business unprofitable :)
Anyway, time will tell !