He pulled the chair out, setting it at a shallow angle to the table so he wouldn't have his back to the room, be trapped by the table, and would still be able to reach his coffee.
Sitting down itself was less cautious, and more fluid than straightening had been, though he swept his coat back around him. Once he was down he braced one foot on the chair's cross-bar, one arm casually on that knee and resting in his lap and picked up his coffee with the other.