RogerRoger de Coverly wrote:opponent moves
record opponent's move
record player move
which I believe is completely legal.
There is possibly one trivial exception to what you say, which is after a flag fall and a player has taken advantage of 8.4.
Lets say, as white, you take advantage of 8.4 and are not recording your moves; you just make the time control at move 40 and whilst thinking about your 41st your flag falls. Rule 8.4 requires you to update your scoresheet completely before making your 41st move. The word completely probably means you have to record blacks 40th before making your 41st.
Also rule 8.5.a seems to me to have an unintended meaning to it.
8.5.a. If neither player is required to keep score under Article 8.4, the arbiter or an assistant should try to be present and keep score. In this case, immediately after one flag has fallen, the arbiter shall stop the clocks. Then both players shall update their scoresheets, using the arbiter's or the opponent's scoresheet.
Lets say both players have less than 5 minutes but one player elects to continue recording the moves whilst the other does not.
Rule 8.5 says that as both players neednt record their moves despite one player continuing to, then after a flag falls the arbiter has to stop the clock while the other player updates his scoresheet. I dont think this is what is intended. I think the meaning of the rule is intended to be ... If neither player is required to keep score and neither does keep the score ..... etc