I should have taken a pic of a unit I worked on today. It had that much ivy inside of it. You could see where the fan had been shredding it. I imagine after its off for a few days it looks like a salad shooter when you turn it back on
Years ago I was at a house with a 1960s vintage Bryant. I could see it from the basement window. Trouble is I couldn't see it from outside. That part of the house was jungle. Not sure what was in there but I wasn't trusting that it wasn't poison ivy or the like. I said call us back when we can get to it. He did. That relic is still there and working!