There are a wide variety of intensities that can elicit VO2 max – it simply depends on the manipulation of duration, intensity, and rest interval.
Here it helps to look at how coaches in other sports create sets to train the fast glycolytic fibers and elicit VO2 max over the course of 10-15 min of work.
For example, a runner doing one 400m at their current 1600m race pace won’t be enough to elicit VO2 max, but 3 of them on :30 rest would, and a set of 6 of them would get them there, and keep them there for the last half of the set.
Many ways to get there and stay there – they key is how to accumulate the most time in zone, for that individual athlete.