The first half. In the second half the Packers defense/lions offense combined with being ahead by multiple scores, dictated a change in strategy. Other than the holding call in the 3rd, dropped pass by Davis on first down which stopped the clock in the 4th, and the miss by cobb/rodgers on third down it worked well.
It's seemingly surprising to some that playing "not to lose" when up multiple scores results in "not losing" almost all the time - unless you want to argue that teams play "to win" when they win but "not to lose" when they lose. One notable and highly unlikely exception notwithstanding.