I think, as I understand it by my primary work in Chronos technologies, is that chrontrons, are particles such as would be suspended particles w of algae, within the ocean.
Say each piece of algae is of a differing nature and represents either a particle from the past future, or present all encompassed within the medium of which one is traveling.
If one can allocate only certain particles, and lock-on these particles, then one can travel within only the vector of time, forwards and or backwards, if they want.
Dimensionality is particular by off-frequencies, by sonic vibration input and this means and Earth as a central bead traveling along a wire, which represents the many traverses around the sun, that each revolution which is a year, has its own particular signature, which allocates a keyway into that particular time?
This is why Chronos technologies had warned of materializing up in the air, after the position of Earth had changed, when traveling into the future.
There had to be a localizer, which would sense mass only.
#As you had said, speeding time up within the bubble, only increases your own particular time rate.
The key in normal time travel, would be to create an event sphere, which would shut all influes out, so letting the Chrononaut, move to locations of time as well?
The key piece of knowledge here is when using time travel devices is, where is the position of the Earth in relationship to the time travel event sphere?
See primary supplies work,
http://chronos.ws/
Blues of future past, by the Moody Blues: