No Chronos are not linked to their partners. The reason being no alchemist would be able to bear the straiN coming from the Chrono.  

And lost numbers and Unlinked can communicate, they just tap into the telepathic frequency. Not everyone can do that as you need to understand their alchemic drive, something Asylums are taught to know. 

Every Alchemist gives of an aura of their energy, an Alchemic drive, this can be sensed by trained professionals.

Think bleach, the spiritual pressure that emits from ichigo and other captains.  

Also yea, Ink post your CS on the CS section and be sure to get your post up as soon as you can.