Her track times of 1526 and 31:47 were both run in Nairobi at high altitude and do not correlate with her road form.
Better to look at her recent road form in recent years where she has achieved multiple times of 104/1:05 to 106 in the half marathon, usually in Istanbul her favorite venue, where she is treated like a Goddess.
When she ran 30 minutes 29 seconds for the ten kilometers in Manchester on the road in 2022 that was also a good indication of her potential because that is by no means a fast course.
It was just a matter of time before she exploded, as she did today.
I think if she ran on the track with her present form she would achieve around 14:10-14:20/29:20-29:30, not the fastest but up there.
Chepngetich is one of those rare athletes who can hold her native speed at her best level the longest.
As someone else said, also the fact that she just had to sit in a seat following those two Kenyans for most of the race was a tremendous advantage. She has been practicing this for months on end in Kenya with male athletes pacing her and it was only a matter of time.