Big progress on the friendship front! Yesterday Cody and Tala played in the backyard, happily and without incident. Tala didn't bark in Cody's face, Cody didn't growl. Cody even initiated play a few times. They did the same this morning.
Relations inside the house are touchier, but also have progressed. Cody isn't growling as much, and Tala is respecting Cody's space more. Cody still seems depressed and annoyed, but less so.
Things are also progressing on the training front. Tala will have her PhD by the end of the month.