Mine only sticks out by 1/2" or maybe 3/4" tops. No doubt there is some variation, but 2" would make me wonder if the upper end is properly engaged.
This is where the tube usually breaks
And here you can see the row of dimples that are supposed to engage in the slot.
These are parts from the non-adjustable column; adjustable is similar but the tube is shorter, the slot longer, and the piece that sticks out from the control head is quite a bit longer. Here's a shot from Macy's Garage showing the relative slot lengths