Here's CK's first INT: It wasn't necessarily a bad read, he had a couple checkdown options that would've been available, the other guy does make a tremendous play though.
This is a decent design by Roman, we come out with a 2 TE set, which causes Chicago to call a cover 3 zone defense - it's what we're looking for. We flex VD out wide to the bottom and then bring McDonald in motion across the formation. We're going to run play action to try and open up the Skinny post in the Seam. It almost works.
note the play action to try and bring the LB's up close to open up the seam route passing lane. The safety though, on his drop opens up to the 3 receiver side. What CK has to do is then look to the other side of the field towards Davis to move the safety - at least make him square his hips so he's not in position to drive on the ball.
You see the LB is dropping into the passing lane and as soon as CK starts his windup the safety is already closing on the ball.
It would've been a tight throw if completed.
INT
He would've had Hyde for at least a checkdown on the play as the defenders were all dropping back in coverage. Not saying he should've thrown it to the checkdown, but it was there.
You see the presence of the LB in the throwing lane causes Ck to throw the ball with a little more arc on it. This helps the safety have time to close on the ball(this is also why I keep saying Wilhoite isn't taking enough depth on his pass coverage drops).
It was
that close. This is why looking the safety off is so important. It's one of those "little things" that has to happen. It's the right call against the defense(the play action didn't affect the LB's as much as I'd like to see though) but a minor mistake in execution makes a huge difference. If he causes that safety to square his hips it makes him 1 or 2 steps slow on the pass - which is the difference between a big gain and an INT. Gotta give it to Chicago's D though, they played that VERY well.