When I was spectacting my friend Layne, I ended up having his score saved as my own.
Screenshots tells the story:
http://osu.ppy.sh/ss/573335
http://osu.ppy.sh/ss/573336
Haven't tried if it's reproduceable because having someone else's scores being saved as mine go against the rules, but I remember when he chose another song I had to download it, clicked download, then when it was downloading suddenly the results screen popped up as if I had played the song myself (before the other one was finished downloaded)
Screenshots tells the story:
http://osu.ppy.sh/ss/573335
http://osu.ppy.sh/ss/573336
Haven't tried if it's reproduceable because having someone else's scores being saved as mine go against the rules, but I remember when he chose another song I had to download it, clicked download, then when it was downloading suddenly the results screen popped up as if I had played the song myself (before the other one was finished downloaded)