we have a new family just moved in next door to us (God help em

) - been there a couple of weeks. If we are are the front on the drive we have been saying a friendly "Hi, how are ye" or nodding our heads or smiling towards them .. but we are getting no recognition back , no smiles, no hellos - nothing. Feels very one sided and weird.
With the previous neighbours there we were always saying hi to eachother and chatting over the wall about this and that and smiled at each other if anyone was out there.
How do we play it now? - its a bit silly being friendly to them and getting no kind of feedback whatsover. Do we take it from this that they want to be left alone and not even try anymore? - maybe they are just private people and want their privacy?