Is it possible to read XMPP with this connection scheme?

Question

XMPP

Hello!
A task came to me, to make an uncontrollably secure chat, for correspondence.
They did not specify the truth for which ones :))
I decided to implement the whole thing according to the following scheme:
1. The client connects to TOR
2. Connects to XMPP via SSL. The server defined it as SHA256withRSA, although wireshark says that TLSv.1.2
3. At the start of the conversation, OTR is automatically turned on
Is it possible to intercept and read this somehow?
Or tell me ways to check that I did everything uncontrollably reliably?