I also, know nothing about the subject,BUT, an educated guess would be..........2 minutes.......
Providing Tony Ratcliffe guided her AND accompanied her to her final destination.
Like it or not, a pound to a pinch of s**t there is nobody else in the World who could do it as good.
What a pity Elephants cant talk.
Interesting you say that, I have actually seen Tony Ratcliffe put her in her travelling truck trailer once when the circus was in Cambridge. From unchaining her from the ground peg to closing the door of the trailer behind her would have taken about two minutes.