as an example, a permission owner I have asked me to ferret his victorian wall garden, I took an out of season jill, and a large hob, using the jill first, I ran her through the first warren four times, at this point the warren looked and sounded empty, there was no beating/thumping of rabbits back feet like normal, I boxed her up, and as it was a hot day, decieded to let "ted" have a quick run to cool down, within seconds of putting him down, three rabbits bolted into the longnet
I'd seriously question the jills ability if a hob can shift rabbits within seconds of putting him down and she