re: If alleva told miles to hire a new OC and let them make the playcalls,

Would not work. You cant let the OC have no accountability, with the HC's job on the line. A HC needs to be able to override a call when needed, or suggest a run or pass, but shouldnt have to check off on every play like it seems Miles does. Thats why we're always so late getting plays in, delay of games after timeouts, etc.