How to use the Runs function in Version 13.3

Questions
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1
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2

Looks like the inbuilt function Split could also be used:

p={4,2,1,10,3,5,6,13,12,9,15,11,7,8,14};

Split[p,#2>#1&]

(* {{4},{2},{1,10},{3,5,6,13},{12},{9,15},{11},{7,8,14}} *)
3

What a fast, efficient, and elegant solution! Thanks for sharing this, Hans!