Dan,
All of the FEH's have the charge/assits gauge correct?
You should be able to look at that and position it in such a way that there is no assist or charge occuring. This would be the 'glide' described, and since the FEH uses the same planetary gearbox design it should be able to glide in the same way as the Prius, though the algorithms Ford used may not allow for it.

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