A cunning plan… fails
With reference to your reply to Benjamin Forest in MF276 (see photo), would this work? Note that I have cunningly not connected the Lightning cable to my iPad Air. As a pensioner I will leave that to the experts at MacFormat, since your pockets are a lot deeper than mine should something go bang! Mike Wilson Benjamin originally wanted to know whether Wi-Fi or Bluetooth was better for tethering an iPad to an iPhone. We facetiously remarked that a USB tether would be the fastest option, but it isn’t possible because there is no such thing as a double-ended Lightning cable.
Your cable lash-up solves that part of the problem but unfortunately it still won’t let you tether an iPad to an iPhone. iOS only allows a device to provide a tethered connection by creating a mobile wireless hotspot, either over Wi-Fi or Bluetooth. Connecting them together as pictured won’t damage them, but it won’t let you tether either.
What you have in effect created is a camera connection kit that makes the photos on one device accessible by the other. If you have a lot of photos to transfer this might be useful but otherwise, Airdrop is probably easier.
No amount of adaptors and connectors will let you tether an iPad using a USB cable. Sorry Mike!