Look, your Dao hatred is insurmountable. The drs who treated Dao say he has a concussion. If that’s not good enough for you, nothing is.
I don't hate Dao. If they did a MRI and CAT scan and found no bleeding or swelling then the other symptoms of a concussion can be faked. If a MRI found bleeding and swelling he wins.
I will wait for the actual data to come in.