I did some digging for you and came up with this info:
the 66 pair you are chasing is currently in an upward trend for its "average interval". So what that means (bare with me, I'm still learning how to read this data) is that the the current "average interval" for 66 is currently 44 draws. So we should "technically" see 66 hitting once within every 44 draws but its currently in an upward trend which means it could go beyond its 44 draw average range such as it is doing now. After tonights 179 draw the 66 has not shown in 90 draws (intervals). Now you might be thinking, "well its due to show", and of course it will but in an upper trend we just dont know when. I'm going to list the past results of the 66 pair starting from 2/1/19 - 2/25/20. I think it will show you a better picture of what I explained above.
2/19/19 Eve: 661 --> 8 intervals (draws from last hit before hitting again)
3/02/19 Mid: 766 --> 21 intervals
3/18/19 Eve: 626 --> 33 intervals
4/17/19 Mid: 066 --> 59 intervals (above average)
4/27/19 Eve: 646 --> 21 intervals
5/09/19 Eve: 466 --> 24 intervals
6/08/19 Mid: 669 --> 59 intervals (above average)
6/19/19 Mid: 066 --> 22 intervals
6/27/19 Eve: 669 --> 17 intervals
7/06/19 Mid: 663 --> 17 intervals
7/09/19 Mid: 676 --> 6 intervals
8/05/19 Eve: 696 --> 55 intervals (above average, upward trend starts)
11/03/19 Mid: 668 --> 179 intervals (above average)
11/14/19 Mid: 646 --> 22 intervals
1/12/20 Mid: 466 --> 118 intervals (above average, upward trend continues)
as of 2/25/20 Eve: so far 90 intervals and counting, above average, upward trend continues.
Now of course we could have double 6's come out the next 3 consecutive draws, who knows? What I just wanted to do is give you some kind of answer to your question about the 66 pair. Upward trends suck and I steer away from them as best as possible. I try to catch pairs that are in a downward trend which means they have a better chance of popping below their interval average and staying in that minimal skip range which produces repeats. Anyway, I hope this cleared up some things on your end.