There are no “special” considerations. During Equalization Phase 2, the Retimer’s upstream pseudo port (USPP) and the Endpoint will simultaneously train their receivers, and they have a total 64 ms at 64 GT/s speed (32 ms at lower speeds) to complete their Phase 2 training. During Equalization Phase 3, the same will happen with the downstream pseudo port (DSPP) and the root complex, and likewise a total of 64 ms at 64 GT/s speed (32 ms at lower speeds) is provided to complete Phase 3 training. The timeouts are the same regardless of whether a Retimer is present or not.