My understanding is the strict answer is "yes", however...
Say we have
1st Ring >=90 for 120 seconds
2nd Ring >=80 for 120 seconds
3rd Ring >=70 for 120 seconds
Now, if there are no agents with scores >=90, it will ignore the 1st ring. If there are no agents >-80 then it will ignore the first 2 rings and so on,
BUT
Let us say we have 1 agent who is On Queue, on the phone and has a score of 95, the next agent "down" has a score of 75. (So no agents "in" ring 2) it WON'T skip ring 2, since our agent matches both >=90 and >=80...
HTH