So my first reaction was "Clock winds on the RFP on a free kick? No way... that can't be right. Clock on the snap (or legal touching of a free kick) should override the RFP."
Which is true, except then I kept reading -- 3-3-2-f:
Snap Supercedes Referee’s Signal. Whenever one or more incidents that
cause the game clock to be started on the referee’s signal (Rule 3-3-2-e)
occur in conjunction with any that cause it to be started on the snap
(Rules 3-3-2-c and 3-3-2-d), it shall be started on the snap. (Exception:
Rule 3-4-4)
And now I'm trying to think of a way for Team A to exploit this -- but Team B can always decline the 10 second run off, with or without declining the distance/safety penalty, so a team cannot illegally consume time by committing 10 second run offs.