Interesting that it turned out to be the 842. I had a look at this deal, but the critic review also appeared for the following chardonnay 6 pack...
[URL unfurl="true"]https://www.thewinecollective.com.au/products/our-favourite-chardonnay-6-pack-valued-at-318[/URL]
...and none of the chardonnays in the pack were the McWilliams 842, so I stayed clear.