@Derek Harbun In such scenarios, I have seen Error: Failed to connect primary ADFS Server from the Azure AD Connect server. This generally happens when Enterprise admin account fails to connect to ADFS Console via WS-Management Listener. To resolve this error, you need to add the enterprise admin account to Local Administrators group on ADFS Server and try again.
Since you have not provided any error details in you question, I have answered it on assumption basis. If this doesn't help, please share what error/message you get on screen, when you say "I cannot get past the Federation Services login". Also, check and share if you are getting any relevant event logged in event viewer at that time.
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