With the way a qb may hit a dozen receivers in a game..with half or more of them only catching 1 or 2 passes for entire game...”timing and rhythym” become overrated...especially given that many if not most teams run the ball 55 to 60% inside the opposition’s 30...see post #19 for details
Maybe 8 or 9 different receivers (of various title). And no actually that’s the indication timing and rhythm is what the game is all about. The structure of NFL offense now is read and know how your team is going to react. From snap to pass is an average of 2.4 seconds, QBs are throwing to spots they know their player will be based on pre-snap read, and the only reason they know that is repetition. And no teams don’t run 55% of the time inside the 30, in the modern NFL 3rd and inches is a passing down.