Duplicate 1860 census entry

Question

Enumerated on the same day by the same enumerator 4 pages apart but different households and different family number  ??

Michael Cook and his wife Ann/Hannah and 4 kids. FamilySearch seems to have figured it out and assigned the same identifier to the individuals but it creates some confusion. Is this common? It's the first time I've come across it. Surely it can't be 2 different families?!

https://www.familysearch.org/ark:/61903/3:1:33S7-9BSC-9XX8?view=index&personArk=%2Fark%3A%2F61903%2F1%3A1%3AQK1B-CPDH&action=view

https://www.familysearch.org/ark:/61903/3:1:33S7-9BSC-9XKG?view=index&personArk=%2Fark%3A%2F61903%2F1%3A1%3AQK1B-CJHD&action=view

Answer 1

There must be two families. The ages of the children are different. ( ages 6, 5, 2, 2/12, 15 vs 11, 8, 5, 2 and 4/12).  Parents and children all have common first names, so that is more difficult.  I agree, Ann could be Hannah - but I think the ages make them different families