The forcing pass (bold) necessarily occurs directly over an opposing bid, double, or redouble (act).
The first, direct, "forcing pass" refers to partner the choice how to act.
Indeed, a forcing pass ensures that the auction will return to the one who issues it, so it may be interpreted as the first half of a two-step action by that player.
[2] Here "... (act)" means any beginning to the auction, followed by an opposing bid, double, or redouble.
Then the forcing pass is a moot point and the concept may be considered inapplicable.
Then pass is forcing; it refers the choice of major suit back to the one who bid 2♦.
At least following trump suit agreement, as in this case (hearts), there is a common conventional distinction.