After my mum died I noticed white feathers at various times - whether they had any meaning is debatable, but I had read that white feathers are often seen in connection with the person who had passed, and so my mum came into my mind - auto suggestion - doesn't matter, because I was thinking of my mum. I also had several instances of a very strong vanilla perfume smell, which is the one mum used all the time especially when I was helping her to shower and dress, the last thing she would do was have a quick spray of vanilla. There could have been no reason for me to smell it at the time, because I don't use it.
It doesn't matter what anyone else thinks or says, if it makes you feel there is some kind of a connection, then carry on thinking it.