No. You can either make a Sonar Recording or make a Screen Snapshot but not both at the same time as the unit is already writing a new file to the memory card and cannot write two at once. Navigational Tracks are internally recorded in the unit and so can be done at the same time that you make a Sonar Recording or make a Screen Snapshot.
You can always review the Sonar Recording and make a Screen Snapshot at that time.