You can read the guidance here: https://www.chcoc.gov/content/guidance-implementing-presiden...
There's no way that a GS-9 or GS-11 2210 network tech taking this deferred resignation option would be hired back under this schedule because they do not qualify for it (unless they happen to be part of union leadership or something, but that's a very small number compared to the whole).
And even if they could hire back a non-policy position under a policy schedule, this resignation/rehiring you've suggested is very roundabout. It's completely unnecessary so doesn't even make sense, they can convert those positions without the need for a resignation and rehiring the individual.
It would actually have made more sense to convert all these positions that wouldn't fall under Policy/Career (that you for some reason believe could) and then to dismiss the individuals without offering this deferred resignation.