Yes, it does. Assuming the HEAT_Late timing is 30s later than that of the Early, each would consider the other's time as off.
Note that BLOCK is a 15s response curve though. So the ends of the Early responses will overlap with the starts of the Late responses. Hopefully there are reasonably long gaps between Late events and the next Early ones. But you will see that overlap in the X-matrix. Note that the Early regressor plus the Late regressor should sum to what a 60s BLOCK response would look like.
- rick