A:AnswerAny lightning port connector supports audio output -- that's why it works when you connect it in your car. I can't speak to video, but that stands to reason that it does
A:AnswerIf I’m understanding your question, this adapter would not work. You need a male 30 pin connection to your iPod rather than the female 30 pin connection found on this adapter.
A:AnswerIt should work fine but at some point awhile back Apple switched which pins they used to power your phone, so it may not charge your phone while playing through a powered accessory. The 30 pin adaptor I had a couple of years ago played fine but didn’t allow charging. Hope this info helps.
A:AnswerI don’t think it will fit properly. I have a under armor case on my iPhone X and the stock charger fits very snug in it. The adapter is very wide.