Only the screenshot was taken 2 minutes after the post was made here. Then, the OP here saw the reddit post 4 minutes after they posted it. It doesn't mean they were posted two minutes apart. If OP here could find the 4 minute old post on Reddit, people can and do see posts here minutes after they're made. This doesn't prove anything except that the reddit person took a screenshot two minutes after the post, and OP here took a screenshot 4 minutes after the reddit post was made. Could easily ask why OP here found that Reddit post so quickly, it's the same line of thinking.