I have been unclear.
If you end up trapped in Denver, can you live out of your carry-on, if they decline to give you your checked luggage?
I've changed planes in O'Hare, it didn't seem any worse than any other airport. Mostly these days, we change in Las Vegas. Keeping kids away from the slots in the airport is good exercise! (Brian used to program slot machines, he explained to me that the machines in the airport and the front part of casinos were statistically less likely to pay off than others. He knew, 'cause he helped program them that way.)
It will not creep above freezing here today.