Not really, no. The steering shaft is pressed in to the steering box and it is intended to be treated as a single unit from there.
If you could separate them, you would still have to remove the column from the truck to put them back together and reinstall them as a unit.
The FAM says to lift the cab to get the column out, but I have seen a couple people say it will come out the bottom if you lift the frame about 2.5'. I have not tried it, so I can't confirm that though.