I came across the pair in the second photograph as I was getting ready to crawl under a large tree that had toppled across the path. I saw the front one (third photograph) first as it was hovering above the ground. The second (first photograph) one arrived, when there was some brief interaction such as flying around each other, before they both landed. They were both perched on their respective twigs. The front one was most active, going forward, then reversing back to the twig it was on. I did not see any more interaction between them. The last two shots were at other locations.
Can anyone confirm the sex of these insects please? The references I looked at seemed to have conflicting advice.