1. A method of wireless communication at a wireless communications device, comprising: receiving a first version of a signal using a first antenna; receiving a second version of the signal using a second antenna, wherein the second antenna is shared between a first radio and a second radio; detecting, by the first radio, a loss of access to the second antenna based at least in part on a hardware event; and performing, by the first radio, receive-side processing of the first version of the signal and the second version of the signal by applying a maximal ratio combining (MRC) weight computation, wherein an MRC weight associated with one of the antennas is modified for the MRC weight computation based at least in part on the loss of access to the second antenna.