Agreed 100%…and I am a huge fan of TTT’s. But they can have WAY too much impact on the GC if they go that long. Honestly, had they had a TTT that long this year, Carapaz would have won easily and the race would have been over on day 2 or 3.
If you want exciting racing that is closer in time, the answer is shorter stages, not longer / ridiculously hard one.