Basically, the post I had authored was based upon an extrapolation of gas laws (including their behavior in non-ideal scenarios, though it remained unquantified) into a medium for transmitting information, implying that the empirical constants for any gas molecules' intermolecular attraction and repulsion would cause any message transferred across the medium to be altered - this would depend on the gravitational forces present inside the posited "wormhole", as the space-time anomaly is colloquially referred to therein (though this would likely not be the case, the imprecision could only affect what was transmitted in the beginning in most cases this author can contemplate. While this perchance would result in the end message being inaccurate, modulation of the transmission would correct for this error in most scenarios.)
The aspect explained by the cosmological constant further on is simply speculative, as the specific behaviors of the "wormhole" anomaly the transmission media would access are not heretofore documented. However, the effusion velocity (to refer to it in inexact terms) would need to be greater than that of the anomaly, though not for any temporal reasons - a failure therein would simply not allow for transfer.
I hope this elucidates the matter. Some of the above is semi-accurate and some is parody, as with the preceding message.