From the BWU:
If we round that up to 10 minutes to account for postgame time and matchmaking time, thats 144 games in a 24 hour period for one team. The average cow yields about 84 lbs. of steak, assuming 8 oz. steaks...well need 1.7 cows.
My guess? A 24 hour community playdate in the Double Team playlist, with rotating teams of 2 Bungie employees
144 Games * 2 Players = 288 Steaktaculars for the Halo fans
288 steaks * 8 oz. = 2,304 oz. (of steak owed to fans)
84 lbs (per cow) * 16 oz. (per pound) = 1,344 oz. (of steak per cow)
2,304 / 1,344 = 1.71 cows needed.
Just a guess. I'd also consider it's connected to Doubles Attack, but you can't earn Steaktaculars in Firefight.