Dear Alfonso,
I have also groups of subjects which rsfMRI was acquired with different TRs.

As the current CONN version offers the option, I inserted the different TRs for each group os subjects.

Is the current CONN version automatically implementing what you suggested here in 2012 or do I need to create a second level covariate lebaling the different TRs?

Thank you very much for your attention
All best!
Renzo