1) I shared my install - I did not recommend anyone to do anything.Running an appliance/extension cord through a wall breaks code. Plugging both devices into the single circuit also leaves people open to overloading the circuit. Personally, I don't care that you did this, but to recommend it publicly in the forum as a general solution is reckless.
2) An electrician with 65 years of experience helped set it up.
3) Extension cord enclosed in a wall is a code violation, but I used burial grade cord that is open on both sides, only passing through in a conduit, which is ok.
4) Entire circuit supports more than the load of both concurrently, albeit with only 1 amp to spare, so both only are used indecently with circuit monitoring which will shut off charger if dryer is turned on.
5) Placarded the dryer to not use between midnight and 6AM.