This counter tracks how many times an authentication request to a TACACS+ server timed out waiting for a response, and per the description a retry to the same server double-counts as both a retransmission and a timeout, while failing over to a different server double-counts as both a new request and a timeout. Because of that double-counting rule, an admin comparing this counter against AccessRetransmissions and AccessRequests can distinguish a single flaky server retried repeatedly from the switch burning through its whole server list during an outage. For instance, timeouts rising in lockstep with retransmissions rather than requests suggests the switch keeps retrying the same unresponsive server rather than failing over.