In SAP, many objects have only a date as a revision property (for example, "AEDTM").
If an object was changed in SAP after a sync but on the same day, it is still ignored in the next sync because its revision property is not larger than the last one.
This potential gap can be reduced by running the sync at the end of the day if possible. But there will always be a gap.
An enhancement request (#32739) has been created.
The product team will evaluate the request and this feature may become available on a future release of the product.