I, a US citizen with US passport, have been traveling to Portugal from the US for business recently.

Business travel for Americans (third-party nationals) is allowed to Portugal during COVID, per the Portuguese embassy in the US; the US embassy in Portugal; and the Portuguese border control (SEF), among other sources.

I've been travelling to Portugal via TAP, as they are well aware of the exception for business travel, and there have been no issues, with sufficient proof of business travel, either boarding or upon arrival in Portugal travelling for business as an American with a US passport.

I'm hoping to fly either KLM or Air France for an upcoming trip to Portugal, but am hesitant, since Timatic does not and has not listed business travel as an exception for travel to Portugal.

Traveldoc, which KLM's and Air France's website directs its customers to, does include the exception

• Passengers travelling for work or study,

My question is, that when checking in for the flight in Atlanta, is the gate agent there going to be using Timatic, since that's what Delta uses, and deny boarding based on what Timatic says, or will they defer to what Traveldoc says, since I'd be flying KLM/Air France. And this assumes that transit through Netherlands and France continues to be allowed for US pax bound for a schengen country.

Thanks.