Single#Chat#10: Bob [PGP bob@example.net] 
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Msg#10: info (Contact#Contact#Info): Messages are guaranteed to be end-to-end encrypted from now on. [NOTICED][INFO 🛡️]
Msg#11: info (Contact#Contact#Info): Bob sent a message from another device. [NOTICED][INFO 🛡️❌]
Msg#12:  (Contact#Contact#10): Somewhat old message [FRESH]
Msg#13:  (Contact#Contact#10): Even older message, that must NOT be shown before the info message [SEEN]
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