I don’t think this is a duplicate topic. I looked and did not see anything.
I currently have two files that have the exact same name which I know Obsidian isn’t suppose to allow. I copied the name from one file to the other expecting to get a warning, but I didn’t. So I have two files with this name: β How To Take Smart Notes (Card). I’m going ahead and deleting one of them because I’m trying to set up a standard way of doing things for myself and if I don’t take care of it now, I’ll forget to do it later and then when I find the file, I’ll get confused about why I did what I did.
Also, just as an experiment, I went ahead and did a duplicate of the one I’m deleting and Obs did add the number 1 to it to make it different from its original file.