In what's become an annual tradition with this made-for-TV holiday, the Flames and Blackhawks had actually swung a trade, but with a logjam of last-minute deals cramming the phone lines at Central Registry, it took some time for the paperwork to get through.
In any case, Carpenter is a Flame, now - and despite the flurry of emotions that washed over him in the moment, the 31-year-old couldn't be happier with his new hockey haven.
He's coming from a team well out of the race, to one in control of the division and with a legitimate shot of summoning Lord Stanley.
"They're a hard team to play against," Carpenter said, recalling an earlier meeting when the Flames bamboozled the Blackhawks, 5-2, and out-shot them 39-21.
Carpenter had an assist that notable, November affair.
"Any time we had a pre-scout preparing to play them, top to bottom, it seemed like every line plays the same," he added. "There's probably more offence at the top of the lineup, it seems like everyone's bought in to how Sutter has them playing, whether it's on the forecheck, finishing hits, or back-checking, tracking, and limiting rush opportunities.
"It seems like every guy, top to bottom, has really bought into that straight-line hockey that he wants them playing. It's really working for them and it shows in the standings and the success they've had this year."
As the prototypical, workmanlike player in his own right, Carpenter figures to be part of that unassailable, Sutter-inspired strategy. The 200-lb., right-shot forward is a versatile depth option for the Flames head coach, and brings an impressive track record of defensive excellence.
For example, no other Chicago forward played more short-handed minutes this year than Carpenter's 128:22.
He loves the challenge of going up against top players in the faceoff circle and is eager to prove himself in a similar role here with the Flames.
"I'm a depth forward," Carpenter acknowledged. "I've played centre, mostly, this year, but I can play both. I can take d-zone draws, play a lot of minutes on the PK. But anytime you're coming in to a new team, you're trying to earn ice time and earn a spot in the lineup. … Those are all things I was doing in Chicago.
"Whatever my role may be, I'm going to come in and work hard, stay true to my identity and help the team win games."