Magnific & Featherlight – Jquery help, please!

My theme (colormag) comes with Magnific. It uses the script to open featured images in a lightbox. I like this, so I wanted all the images to do the same. Couldn’t immediately see how to do this with Magnific and installed the Featherlight plugin. It works – all good so far.

Two issues:

1] Neither plugin renders the caption or description with the image. I’d like at least one of them.

2] I’m uncomfortable with having two concurrent javasacripts that do the same thing.

Does anybody know how I can alter Magnific to work with ordinary inline images as well as featured images?

And what do I need to add so as to get the caption, etc along with the image?

(I used to be good at Jquery but that was a while ago and I’ve lost confidence – I will be able to follow instructions!)