Here are my 2 cents, in short: The central block where speech-plan execution is suppressed (action suppression) — without the compensatory/error responses — results in reduced feedback processing, such as reduced auditory feedback. For example, many people who stutter constantly check whether they spoke fluently, which likely happens more often during repetitions because speech production remains active even though it’s in a repeatable form. Repetitions naturally lead to increased sensory feedback processing for the same reason: the speech system is still engaged in speech production — unlike a silent block, where nothing occurs (no movements, reduced feedback). So I think the finding that repetitions/prolongations overactivate the feedback system makes sense. I argue that these phenomena belong under error/compensatory responses; a silent speech block would likely fall under “inhibition”.