AT&T Delays Expected T-Mobile Close Date

AT&T battles the Department of Justice and other lawsuits it is facing over the proposed acquisition. AT&T has launched LTE in five markets. I wonder since AT&T says that it needs to acquire T-mobile ASAP so they don't have network problems. Is AT&T putting up LTE networks with only AT&T spectrum signals or T-mobiles as well. And just activate or upgrade their network later on. AT&T has already set up 5 LTE markets. Will this delay stop or slow down their other markets they want to launch LTE in. Maybe AT&T thought they would have already acquired T-mobile before they figured out. "OOps" we already had enough spectrum to run our network.