Apparatus having corresponding methods and computer-readable media comprise: a transmitter configured to transmit, according to a first protocol, first wireless signals in a first frequency band; and a receiver configured to receive, according to a second protocol, second wireless signals in a second frequency band, wherein the second frequency band is adjacent to or overlaps the first frequency band; and an arbiter configured to allow the transmitter to transmit the first wireless signals according to the first protocol while the receiver receives the second wireless signals according to the second protocol responsive to at least one of i) a signal power level of the first wireless signals being less than a first signal power threshold; and ii) a signal power level of the second wireless signals being greater than a second signal power threshold.