The use of "、" in more than three items In the following sentence:


  沙溢、胡可与安吉、小鱼儿一家四口集体亮相，同时《捉妖记2》视效制片人Ellen Poon也透露了电影幕后制作的花絮。


I think the use of "、" should be A、B、C与D. In other words, it should be put between each word except the last one, in which case 与 or 和 (etc...) should be used instead.

However in this sentence, it is in the form of A、B与C、D, so now I wonder what is the correct form, and whether there is any difference on the meaning regarding how you put the "、" to concatenate words.
I guess the reason why it is put in this way, as through a search, you will find that 沙溢、胡可 are the parents and 安吉、小鱼儿 are the children in the family.

As far as I know, the "correct" form is A、B、C与D. But it may not the only acceptable way, especially when you can divide the words into groups. Like in this one, parents and children. The four words are not equivalent now, and "与" is used between groups but not between the words.