How to describle RPO in recoverpoint system ?

Hello,

We know in recoverpoint system the RTO indicates the journal delay(the data in journal has not been destributed to the replicate volume), but how to describle RPO ?

1、Is RPO zero in sync replication mode ?

2、Which segment can cause data loss（RPO !=0）？ Splitter to RPA ? Or RPA to RPA ? Or RPA to journal volume ?

3、Which segment is different between sync and async replication mode ? Does the defference only exist in "Splitter to RPA" segment ?

4、How can i see the current RPO ?

Thanks.