Thrawn cannot fail to notice Hera's arrival. She, along with a few others, is a face he almost expects to see, on days he comes into Milliways.

It's . . . let's say 'safest'.

He feels her gaze on him, once she's finished whatever business she has with Bar. He gives it a minute, then looks up from his datapad, expression shifting only enough for one raised eyebrow.

If she'd prefer he went back to pretending not to notice her, he's willing.