In the case of the 2nd miniproject testing the naive physical-logical clock algorithm, why isn't the simplest counterexample that the logical clock advances twi

In the case of the 2nd miniproject testing the naive physical-logical clock algorithm, why isn't the simplest counterexample that the logical clock advances twice for each message send/receive, and so if the message send rate is greater than half the physical clock rate, it always skews the logical clock at a rate greater than the physical clock rate?