Yeah, that's how I see it too. I'll be a bit surprised if there is a suspension there, unless they deem the knee on knee was intentional. He kept his elbow in, he didn't leave his feet, the main point of contact was his body even though he also caught his head, he didn't take a bad angle, and Aho put himself in a vulnerable spot. Giordano had to play the body there and given how Aho shifted lanes to try to go around him.
Our season, which is hanging by threads as it is, is completely toast if Aho is either out for an extended period or isn't the same when he comes back. Calgary's plan was to be physical with Aho, and hit him often though, you could see that from the start. Bennett was repeatedly cross checking him in the 1st period, then the took a run at him (legally) near the bench, etc.. Can't say I blame them on that strategy.