Oft times, suspicion is aroused when one views the way Congress reacts to a certain issue. Concurrent receipt is one. The proposal to authorize concurrent receipt of both military nondisability retired pay and service-connected disability compensation swings like a pendulum from one House of Representatives committee to another.
Concurrent receipt is an issue for all of the above.
All of this takes time and while the days pass into months awaiting this information, the committees do not have to act. However, the day comes when pressure is sufficient enough to schedule hearings. One time one committee balks while the other committee points a finger. The next time it's the other way around. Only if there is enough urging from its constituents.