Congrats (seriously)!

However, many of the interview tests themselves seem to discriminate for age (or at least, distance from college graduation as a function of time). Like another commenter here noted, its a collection of typically smaller, indirect biases against age that add up on a scale.

Also, being mid-forties isn't too bad as long as you aren't applying to a SV startup. I'd be curious what the result would have been if you were say, 57. Note: 57 is still 10 whole years from social security retirement age.