Say you manifest Temporal Acceleration for 1 round, and while accelerated, manifest, using the Linked Power feat (Complete Psionics, page 62), power A linked with power B. Does power B kick in as soon as Temporal Acceleration ends, or does it somehow vanish in the seas of time?
The obvious use here is to pick Synchronicity as power B to effectively transform a swift action into a standard action. Other uses could be to obtain more move actions using Hustle and a duration of Temporal Acceleration longer than 1 round.