East-sider,
If you weren't offered a H-W re-test in darkened conditions, it's because you made a critical error the first time around, i.e. naming red as green or vice versa.
You only get offered the dark adapted test if you make a non-critical error, i.e. naming red as white or green as white or vice versa.
The timing of 1 - 2 seconds is correct. Anyone having 5 second exposures has been very fortunate.
HTH
2close