So if you learn in a glass cockpit, you can fly both whereas, the other way round you'd require differences training? Is that right?
You'd be nonetheless very slightly bonkers as a newish PPL to launch off in a steam gauge aircraft with no training on or experience of such, unless perhaps it was a wonderful day and you were only intending to navigate by looking out of the window. Following an NDB needle isn't quite the same as following a magenta line.