I worked for the same company - at 5 locations over a period of 33 years. Many of the folks from the first location moved up the ladder and went to various other locations over the years. I ran into several of them and found this interesting...
Some folks age, and even if I hadn't seen them for twenty years, I immediately recognized them.
Other folks aged and (IMO) didn't look anywhere near how they once did and I just could not recognize them. On one particular occasion, I was walking down an empty corridor and a woman was walking towards me. When we got close she got a big smile and greeted me by name. It was pretty embarrassing, for I didn't have a clue who she was.
But I hid my ignorance and shortly realized who she was. Twenty four years earlier, we worked together and four of us would go to lunch every day for three whole years! And yet, even realizing that, I didn't totally recognize her.