This might be of interest : recently, Prince Andrew and assorted
other luminaries rap'd down Britain's new & tallest building,
The Shard (named for its looks, methinks), some 787 (?) feet.
A question arose as to what knot he was tied in with, which led
to finding several --differing slightly--, which led to "Huh?!" and
then the revelation that the full abseil was done in three sections
--a quite short initial drop, then into one, out another window
(with new rig); a lonnnnng drop, then into a broadly open window
platform; and the final drop into photo-op glory. (Yep, by that
count, one can want to see whether the lonnnng dropper is the
same as the (first) last --not a stunt double.
I count 5 brake bars.
No time records threatened (unless on the slow end) !
URLinks run longer than the rappel, so let Google do the work.
*kN*