Eligibility criteria: EU PR then EUSS, a total of ~15 documented, active years in the UK
Language: degrees taught in English in the UK
Nationality: EU
Method of application: online
Date of application submission: 27/09/23
Date of debit of fees: 27/09/23
Date of receipt of acknowledgment (by UKVI): 27/09/23
Date of enrolling biometrics: 05/10/23 (Croydon, free, self-scanning etc)
Date of receipt of confirmation from UKVCAS: 05/10/23
Date of receipt of approval: 15/01/24 (email from Home Office Atlas around 10am)
Letter from Council for the ceremony: pending
Date of Citizenship Ceremony: pending
Inspired by the success stories posted here, I did email FurtherNationalityEnquiries last Monday (08/01/2024) but did not receive a specific response. Unclear whether this helped or not  
Thank you all for sharing your journey!