IDK if you actually have to pull the engine, but a lower flange of the timing cover goes between the oil pan and the block. It's a lousy design in that regard and can be a PITA.
If it's a 2wd you may be able to lift the front of the engine enough to lower the pan, but I don't recall for sure. But the risk of leaks there goes up. Most likely you have to pull the engine, thus 10 hr.
If you want to change the oil pan gasket, you have to pull the engine on the 2wd as the pan won't clear the cross member to get past the oil pump internally.
I've heard of folks actually cutting the new oil pan gasket and working it into place but they never seem to report back whether that sliced new gasket now leaks....BTW that tactic also assumed you can get the old gasket off from the side. Good luck with that.
You might consider pulling the engine and trans together, drop the oil pan as Ford says, then shoehorn the assembly back in as one unit without separating the two. It was separating the two that was the bad idea for me. Laying on my back in my garage is not the way to get the flex plate and trans to line up without major, major headaches, even with a neighbor helping.
On some 4wd there may be enough room between the cross-member and the oil pan that you can actually lower it without pulling the engine.