Warning: Spoilers ahead for Doctor Who season 15, episode 3, "The Well."Doctor Who's Disney era, and makes sure Gatwa's sophomore season starts at blazing speed.

Belinda's initial reluctance as Fifteen's companion appears to have withered away since the season 15 premiere, as she has started to find some joy in their adventures. However, her earliest episodes must be taking a toll on her physical and mental stamina.

All Of Doctor Who Season 15 So Far Seems To Have Happened On The Same Day

The Doctor and Belinda's clothing gives away the fast-paced timeline

Since Belinda's debut, there's been very little of her story not shown onscreen by the end of "The Well." From leaving the hospital and being taken to space in "The Robot Revolution," all the way to the end of "The Well," Doctor Who has stayed with her. The beginning of "Lux" shows both Belinda and Fifteen wearing the same clothes as in "The Robot Revolution," implying an immediate continuation. Similarly, "The Well" begins with them wearing the outfits they changed into for "Lux." Although some brief conversations may have happened offscreen, they're unlikely to be significant.

The Doctor and Belinda's recognizable outfits crossing over into the beginning of the following episodes strongly suggests that those adventures are happening back-to-back, without any sleep taking place in between. So, it's probably true that Belinda has experienced everything up until the end of "The Well" within what is, for her at least, one day - if not less. Therefore, Belinda really has been thrown in at the deep end and has thrived.

Doctor Who Season 15's Timeline Makes Fifteen & Belinda's Relationship Unique

It's not often a new companion is thrust so chaotically into the Doctor's world

Doctor Who will usually tease the occurrence of unseen adventures that happen between episodes, but season 15 hasn't prioritized that. Instead, viewers are being treated to what is essentially an unfettered view of the earliest stage of the dynamic between Fifteen and Belinda. So, not only is this a thrilling experience for the audience, but a Doctor's new companion is very rarely thrust into the chaos so quickly and for such a sustained period. Therefore, Doctor Who has found a way to make the otherwise-familiar Doctor/companion dynamic feel fresh again.