In Alastair Reynolds's Revelation Space series of books, there is a cache of mysterious weapons called "Cache Weapons" or "Hell Class weapons". They work in different ways, but they all seem to have some spacetime-bending properties.
The origin of these weapons is mysterious, but eventually partially revealed:
It is eventually revealed that the Conjoiner faction of humans created these weapons at some point in the past, based on blueprints/information from the future, through Exordium. According to Wikipedia (although I don't remember this from the books itself), "The Many-worlds interpretation of quantum mechanics is assumed, and allows participants to form neural links with their past, future, and alternate selves" through Exordium.
There is another class of powerful weapons later in the series, called hypometric weapons.
Hypometric weaponry is said to be a highly advanced class of weapons that also bend spacetime, usually discovered only by races after one or two million years of spacefaring civilization. It is discovered stored inside neutron stars that work as computers by parallelizing the past, present and future versions of itself.
So my question is this:
Are the Cache Weapons built from the same technology as the hypometric weapons, gleamed from the (or a) future?
And as a related bonus question: In Reynolds's House of Suns, a stand-alone novel not connected with Revelation Space that takes place millions of years in the future, there is a class of weapons called "Homunculus weapons", that also work by bending spacetime. If we assume the "many-worlds interpretation", is it possible that the Homunculus weapons are also the same technology as the Cache/hypometric weapons, from one possible future of the Revelation Space universe?