In the ingress handshake metrics test we check the `averageTimeToCompletedAuthMicros`'s value does not exceed the `totalTimeToFirstNonAuthCommandMillis`'s (accounting for conversion between millis and micros). However, we compare the `totalTimeToFirstNonAuthCommandMillis` difference between T~2~ and T~1~ with the `averageTimeToCompletedAuthMicros` from T~0~ to T~2~. This check will fail if authentication too a long time between T~0~ and T~1~ and was significantly quicker between T~1~ and T~2~ as this would lead to an high average with a low value for the diff in total time.