There is a spider which regularly makes a huge web outside our door every evening in summer. This morning I noticed it was communing with another spider of the same variety; they were touching leg ends or whatever it is spiders have at the end of their legs. I went and put the battery in the camera and when I got back they were enmeshed thus:
I don't know what they were doing but when I went out again about 3/4 of an hour later they'd done it. The web was more or less gone (the spider takes down most of the web each morning leaving just an overhead strand which is presumably a hassle to put up so you'd only want to have to do it once) and so were they.