ESB link in PRX mode requires re-initialization after minutes with nRF54L15

We are experiencing some ESB link failures on the receiver end of our system: nrf54L15.  After minutes to hours of use the receiver will stop getting data (we know the transmitter is still sending).  If we re-initialize esb subsystem everything is back to normal.  Unfortunately we have no good means to detect the link is down or know why. Its still in ESB_MODE_PRX we just are no longer getting any interrupts.  We have some timeouts on the configured `event_handler` but those are too long to be very useful.  Any advice you have to debug would be helpful but I also have two questions:

1. Is there some detailed documentation on how the ESB system/driver works on the nRF54L15? the driver code is difficult to understand on its own: https://github.com/nrfconnect/sdk-nrf/blob/main/subsys/esb/esb.c and the documentation page seems generic and high level (does not explain much of what the driver does): https://docs.nordicsemi.com/bundle/ncs-2.7.99-cs2/page/nrf/protocols/esb/index.html
2. Can you provide some ESB status register we might be able to monitor/read from to get more information beyond the three interrupt events and the mode that the ESB is in?

Thanks,

Galen

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