try to see it like this:
whenever you create a secure channel in this type of context, you create 2 endpoints…
whatever you stuff into the one endpoint comes out of the other … what you put in may be plain text and it will come out as plain text …
but what happens between the two endpoints … that is subject of the actual protocol … in this context something like “SSL is an encrypted secure channel” or “Secure channel is created and the data is encrypted” just describes features of the protocol, meaning that the stuff that happens between the two endpoints is … encrypted … secured against replay … secured against unnoticed modification … etc
if you have a setup like this:
SENDER -> X -> SSL Endpoint 1 -> Y -> SSL Endpoint 2 -> Z -> RECEIVER
when you look at X, you can see plain text
when you look at Y, you can see encrypted messages
when you look at Z, you can see plain text again
solved SSL channel is encrypted or data