Are pairs/dance couples allowed to do their twizzles in opposite directions? Have any?
(I was thinking about this before I looked in this forum and then I saw the last question

)
They are allowed.
A feature for the
pairs step sequence is "Changes of position (crossing at least three times while doing steps and turns) for at least 1/3 of the sequence, but not more than 1/2 of the sequence."
When pairs choose to do the crossing patterns feature, they often do all their turns and steps, including twizzles if any, in mirror image for that portion of the pattern
For ice dance, one of the features for the
twizzle element is "Set of Twizzles performed side by side in opposite direction (mirror), without crossing the other skater's pattern." They have to do the whole sequence in mirror image to earn this feature; one partner may not switch directions in the middle of the sequence.
I don't see anything that would reward or penalize this in the
not-touching midline step sequence, but it is definitely allowed:
"Must incorporate mirror and/or matching footwork. Both partners may cross each other’s tracing(s) and may switch from matching footwork to mirror and vice versa, unless otherwise specified by the Ice Dance Technical Committee."
For the
dance step sequences in hold, the partners would not likely be doing twizzles at the same time, or doing the same steps at the same time in general throughout the sequence.
I have a question about event start times. Why do some SA events start at random times, like 15:27 or 16:57 ? Why not 15:30 and 17:00?
My guess is: They know exactly how long each part of the setup for the event will take, e.g., the 6-minute warmup takes exactly 6 minutes. The TV network (NBC and affiliated sports channels in this case) wants to start the live broadcast at a specific minute in their broadcast schedule. So they ask the federation to back up the start time of the introductions and warmup so that the point in the proceedings where the network wants to start live coverage will happen exactly when they want it to happen.