If its Father Robert Altier, it is VERY MUCH in line with Catholic Teaching. I’ve got a study of his on MP3 files that covers the Catechism very well and very thorough. You will like his explanations.
Oops. I just saw that it is not Fr. Robert Altier that you are asking about (I thought it was a typo). I’m not familiar with Robert Alter or his works.
Robert Alter is a well-versed Jewish scholar. He’s very well learned in Ancient Hebrew Literature, and can provide much insight into its literary analysis (ie what it meant for the audience at the time).
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