Answer:

The answer to both is "it depends on the type of impulsion forming." In a Standard impulsion, where waves 2 and 4 do NOT overlap (i.e., they do not share any of the same price terriroty), wave-2 CANNOT take less time than wave-1 and wave-4 CANNOT take less time than wave-3. Keep in mind, the measuring of time consumed by waves-2 & 4 is from beginning to end, not from high to low. Part of wave-2 or wave-4 may exceed the high of the previous wave and may actually conclude above the top of the previous wave IF a Running correction is present.

On the other hand, in a Terminal impulsion, wave-2 IS allowed to take less time than wave-1 and usually does, plus wave-4 IS allowed to take less time than wave-3 and usually does. A NEoWave condition I call "extreme alternation" is also possible in Terminal patterns, which allows the time and price consumed by wave-2 to be much greater or far less than that consumed by wave-4 (a condition NOT allowed in Standard impulsions).