Back with some updates. The vehicle died on me 4 times. First three times in service, they checked whatever is checked with the "umbilical cord". Nothing showed up so they test drove it for a while and could not replicate the behavior. When I called the service writer to alert them the vehicle was coming back again, I asked what we were going to do differently this time. I also requested a meeting with the service manager and told them I'd be looking up contact info on Ford's Regional Svc Rep.
Service Mgr met with me and after I went through the chronology of events, he says "sounds like the throttle body to me". The writer couldn't tell him whether the techs had checked the TB. One day later, the Svc Mgr calls to tell me the body was replaced and the car was ready to go home. Couldn't explain why the TB hadn't been checked previously, but said he used this visit as a "training moment" for the staff. Sounds good to me.
Side benefit ... my MPG prior to the last service call had been running 18.5 - 19.5. It's now up to 20.5 while driving under same circumstances. Another benefit, but I wish I would have known to request service sooner !!
Thanks to y'all for shoing concern and offering advice. That's exactly how a forum like this is designed to operate. Thanks again from The WestSide !
yes to SYNC, and assume it was used during the electronic service. They told me the car didn't "throw a hard code" so there was no evidence in memory of the cause of failure.