Edit to add, I think the rule is 2 passes attempted from behind the line of scrimmage AND completed. Obviously, if its passed the LOS, it's a penalty, or if it's incomplete, it's dead. End edit.
The 2 forward pass was because of something Tom Brady did last year. A pass was thrown, batted back to Brady, and Thrown again for a gain of 8. It was 3rd and 10.
It was an illegal forward pass. 5 yard penalty, repeat the down. 3rd and 15.
Or decline and it's 4th and 2. Either way, the Offense gets another opportunity with 4th and short or 3rd and long.
The rule is like intentional grounding. Loss of down and yards.
link to the play referenced
Love both of your attempts. The more I'm thinking about it the more I want us to do something similar in on the first 2 days of the draft - namely - trade back in the 1st, get another day 2 pick... get Turner in the second and best OT in 1st or vice versa - whatever the board says.
I think that bolded piece is meant to eliminate the end of game, desperation, multiple passes back and forth behind the line of scrimmage. It really wouldn't have much of an impact on the game outside of a very rare occurrence.
This is what they're trying to get rid of:
It's a ton of these plays in this video, but the first one should illustrate how ridiculous these plays are.