If this sort of thing happens, you can 'report the post'. Click on the relevant ikon top right of the post and ask to have the post moved or deleted. One of our
always on duty almost always on duty Mod team will do the job for you. The problem if you wait a while is that both posts have probably been answered. When the two Threads are merged the posts come together chronologically and we land up with an 'interesting' mix of questions and answers!