Rivas surveyed Anse none too amicably, his gaze going from man to horse and its gear, then back to the Texan once more.
Rivas already hated Anse.
mnli hypothesis: Rivas already hated Anse. premise: Rivas surveyed Anse none too amicably, his gaze going from man to horse and its gear, then back to the Texan once more.