There were many critics of Chris Chibnall's tenure as the Doctor Who showrunner who rejoiced when Russell T Davies announced his return. Along with the once and future executive producer, David Tennant and Catharine Tate also came back for one more go-round in the TARDIS. The most vocal critics of Chibnall's era hoped Davies would erase his admittedly controversial developments. Instead, the opposite seems to be true. In the second Doctor Who 60th anniversary special, "Wild Blue Yonder," Flux and the Timeless Child are mentioned by the Fourteenth Doctor (who looks just like the Tenth). It's not just a passing reference, either. It's discussed during a deeply emotional moment for the Doctor, facing off against a Not-Thing that looks Donna.
Source：https://www.cbr.com/doctor-who-russell-t-davies-chris-chibnall-era/
