Hipkins delayed his standup to allow his colleague to walk down the aisle.
National MP Matt Doocey said it was "absolutely disgusting" that Labour would "block" their own member.
Experts warn taking credit for the independent regulator's decision risks politicising the vaccination response.
The East Coast MP will be back in the Beehive on Monday.
"Hopefully this is the last week of treatment before I get to go home back to my own bed."
Allan is in her third week of chemotherapy following her cancer diagnosis.
She was diagnosed with stage 3 cervical cancer earlier this month.
"I've been blown away by the messages, the letters, cards, emails, flowers, books, gifts and all the prayers and love I'm feeling across the motu."
"She is awesome. She is a force of nature."