Previous Post I confess to sharing Ancient One's ambivalence to the Speedforce concept, while often a writers godsend it is indeed a very lazy catch-all plot device when all is said and done, one that is used to generate story potential but also to wave aside consequences and impose entirely arbitrary limitations/possibilities on The Flash. Still, it sits in the same place as The Source or the Quantum Field do in the DC Universe and could be said to be an expression of The Source itself. I don't think this has ever been said to be the case, but if you look to Rebirth #1 and last seasons television interlude as Barry struggles to regain his speed while lost within the Force it does seem highly likely that the Force and The Source are indeed two sides of the same coin, spanning dimensions and realities and existing outside of them. What Barry and others see while within it is likely to be as much their own projections being played out as it is any sort of reality or actual independent sentience...

The Source is one aspect of the presence in the DCU, as it communicates to the new gods, and maybe speedforce is another aspect of it, just to speedsters...