Windows Azure ServiceBus Relay clarification

Windows Azure ServiceBus Relay clarification

Could some one Azure Service Bus expert help me with queries below?
When does these TCP ports gets used 9350 to 9354? Any communication
between Azure Service Bus Relay and on-premise WCF Service?
If we use webHttpRelayBinding, then Client to Service Bus End Point
request happens via HTTPS and from SB to WCF Service via TCP?
If we use tcpRelayBinding then Client to SB and SB to WCF Service happens
over TCP?
Is it possible to use Hybrid Connection for webHTTPRelayBinding as we are
noticing slow response time?
Is it fair to assume that tcpRelayBinding is always faster than
webHTTPRelay Binding?
Is it fair to assume that communication between SB and WCF Service
(Onpremise) always happens on TCP only?