Coexistence interface for multiple radio modules using a reduced number of connections

Briefly, in accordance with one or more embodiments, a first radio is operated in a first coexistence mode between the first radio and a second radio. The first radio monitors a first signal received from a third radio to determine if the third radio is active. In the event the third radio is active, the first radio switches to a second coexistence mode between the first radio and the third radio, and the first radio then operates in the second coexistence mode.