its using your power duration curve, so when the curve changes then interesting things happen Measuring/Estimating TTE (Time To Exhaustion) - #16 by bbarrera or https://www.trainerroad.com/forum/t/kolie-moore-podcast-wisdom/30520/473?u=bbarrera
welcome to the fun part of using WKO! FWIW I rarely look at TTE in WKO, it seems particularly sensitive to PDC and exactly what efforts are in the 90-day window.
^ this.