It took me about a week to nail down "Hard to Handle" with 2hr practice sessions for about 6 days. However, if I moved on to another song I would forget some solo notes when I came back to play HTH. It took another month with various practice times for it to finally engrave it in my brain.

This brings me to this question. I am an advanced player but how long does it take to learn a song? I know everyone has a learning curve and there is always that staleness until you break through the wall sort of thing. How long should it take to nail a song.

So two questions.
How long did it take you to finish HTH?
How long should it take to learn a song with a difficult level of 4 to 5 guitars?