This reveals that the Future Flash that saved his younger self and that warned Barry from Season 1 to not interfere and save Nora Allen is the same Flash from this episode who is from the present-day timeline.
Barry and Thawne having drinks together at O'Shaughnessy's with Barry questioning Thawne about his purpose being back in the past is very similar to when Thawne was having drinks with Sara Lance at The Fixed Point Bar where she questioned him about his purpose being in the past in The Fixed Point (2022). Thawne also realized that killing Nora Allen is also a fixed point in time.
Rachel Rosso, the chief of surgery in the hospital, is the mother of Ramsey Rosso AKA Bloodwork.
Zatara's, the name of the restaurant that the Allens go to, is also the name of DC Comics heroes father and daughter Giovanni Zatara and Zatanna Zatara, who are a sorcerer and a sorceress Zatanna who cast spells by speaking backwards.
The episode title is a reference to Barry time traveling to the year 2000.
- It's also a call-back reference to what Eobard Thawne said about Barry creating a "brave new world" in the Season 3 premiere episode "Flashpoint" where Barry time traveled to the year 2000 and saved his mother from Thawne.