I'm thinking it might be related to Bard.
For example, I searched for one long phrase in quotes and it only appears in a one place on the English language web. (2003) [0]
Another phrase appears in this news article. (2001) [1]
None of these things are related to mathematics, and are not nonsense.
Does this IPv6 prefix looking string mean anything? [2002:ae0:dd6e::]:3400
[0] https://www.yorkpress.co.uk/news/7943515.o-roy-you-left-me-c...
[1] https://www.theboltonnews.co.uk/news/5895388.no-parking-fee-...