With 3rd and 14 on the Detroit 35 yard line, a 3 pt lead and 1:14 on the clock, I believe the Cowboys should have considered kneeling. (People will criticize me for hindsight bias, but this is what I advocated for in the moment to my roommate).
Kneeling takes away the chance of a penalty or more importantly of a fumble. I did not think the Cowboys would attempt the 50+ yard and despite how good Bailey has been (and the fact that he made it), I still disagree with the decision to kick it and potentially give the Lions the ball near midfield.
If they kneel it, then the clock runs down to about 30 seconds. I would use the full run-off and take the delay of game penalty. At this point, the Cowboys would have 4th and 20 at the Detroit 41 yard line with about 30 seconds left. The Cowboys could then punt it and with a nice high punt, even if it goes out of the endzone for a touchback gives Detroit the ball at the 20 yard line with about 23 seconds left.
Though there is only a 3 pt lead instead of a 6 pt lead. The Lions would need to gain at least 45 yards in about 2 plays to have a chance to kick a game tying field goal since they would have no timeouts. This reduction in time would have been a substantial difference as Detroit could not have run that play over the middle to Calvin and would have needed to throw towards the sideline.
I would love to hear other people's opinions on this approach. I know it is extremely conservative but unless the Cowboys would have thrown it on 3rd and 14, which they wouldn't have, I don't see it being any more conservative than a running play. Additionally, if the Cowboys still wanted to kick the FG, they could have taken timeout with 1 second left on the play clock on 4th down and only had a field goal try that was longer by a yard, but I think punting would have been better.