However, although the message was sent to Polkadot and execute, the channel was not opened. This is due to the circumstance the parachain sovereign account of Zeitgeist on Polkadot had not enough funds to reserve for opening a channel. The account is now funded appropriately and the XCM can be resend.
A vote was taken to open a channel request to HydraDX and it passed.
The XCM was executed but the channel was not opened because there wasn't enough money in the account.
The account has now been funded and the XCM can be resent.
The channel will allow for communication between Zeitgeist and HydraDX.
The situation has been resolved and the channel will be opened soon.