Approval map, delayed notification of additional employee

I have an Approval Map use case for sales order that I cannot figure out.

1. Employee is immediately notified.

2. If the employee responds within 14 days the document is completed.

3. If the employee does not respond within 14 days then a second employee is notified.

My initial thought was to make two steps, placing a decision wait time on the first step.  However, if the first employee responds I do not want the approval to fall to the second employee.

Does anyone have any ideas how this can be accomplished?

TIA.

Russ.