I found it odd at the time they started these confirmations immediately after the omnibus vote. I guess it was so sort of deal made to get the train wreck of the 1625 passed at midnight.
Actually a fairly typical pattern just before taking a recess. Sombody runs the Executive Calendar around, and determines which nominees can pass with unanimous consent. Deadline for the list being on McConnell's hands is "the day before the recess" or "the day before adjournment."
Form my point of view, the confirmation spurt is completely unrelated to the appropriations, other than they happened on the same day.