We had a windscreen hit by a golfball sized stone in Cornwall under similar circumstances. Morally one should be able to claim for the lorry's insurance, but first you would have to turn round and chase him, and second now that I am nearly 70 I would think twice about taking on a lorry driver.
Thank goodness I have insurance cover for the screen.
Stone chips: we have a few and I keep thinking that I will apply some Chipex after the next trip. A bit like tomorrow, "after the next trip" never comes.