I posted about this one a couple months ago:
I personally observed them perform the combustion gas in coolant test and it appeared to pass. I ultimately didn't jump on it for a sum of other reasons.
What is interesting is that the Toyota dealer in California where they sold it, not the place where the head gasket was diagnosed incorrectly, they did a whole bunch of other work that's not showing in the Toyota record.
And I recorded this about my experience:
Very interesting experience. With dealers it is easy.
How do you know the dealer is lying? His lips are moving.