With the timers now clearly visible (no having to wait for testing) I checked Extended III and Blessed Coldain Prayer Shawl 8.
I have 15% extended in AAs and here are the times in minutes for each combination:
Virtue - minutes Regular: 150 0% 15% AA: 172 15% Extended III: 192 28% Shawl: 202 35% Shawl+ExtIII: 202 35%
Now I've got to find an inexpensive Ext IV item to test with that.