Original fictional transcript. Not dig output. No query was sent.

Question seen by the resolver
Name: shelf.lab.invalid
Asked for the IPv6 address record

Answer published for that name
shelf.lab.invalid    AAAA    2001:db8::23
shelf.lab.invalid    A       192.0.2.23

Also published
short.lab.invalid    CNAME   shelf.lab.invalid

short.lab.invalid holds only the CNAME. The address records sit on the target name.
Predict which data answers the IPv6 question.
Check: 2001:db8::23