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Opentherm and opentherm rf

Tags: #<Tag:0x00007fc9c40ac338> #<Tag:0x00007fc9c40ac248> #<Tag:0x00007fc9c40ac040>

Hi all. I just bought a new boiler and went for one that could speak opentherm.
This was so that external temperature and desired/current room temperature can be fed to the boiler allowing better control.(http://www.intergasheating.co.uk/consumer/category/combi-compact-eco-rf/)
This has an open therm connection for which an adapter can be built and then attached to the boiler via cable (http://otgw.tclcode.com). The boiler also allows control via RF using an 866Mhz protocol.
Has any one managed / tried to reverse the RF protocol ?