If you have any question about an activity that might be construed as unauthorized collaboration, ask your professor. They will provide clarification and direction to you about the activity.
Students have said that they did not understand or think that it was unauthorized collaboration. Don't try this excuse because professors don't buy it. Here is the problem: We can't, and won't list every minor way in which students can collude. The burden is for you to ask for any clarification for the specific course from your professor. Don't assume that what another instructor allowed in another course will be allowed by this professor in this course.