I think Manifestation allows, at least the conception of expression?
Manifestation can have expression, and reflection, and projection.
Manifestation though is dependent, perhaps made with, context?
Transmission is ironic? It is in between practice. It requires to be transed as a process and making it, practising transmission is doing that interval.
A radio waver transmission is focused on being a radio wave – not on whether or not it will be picked up. It could – or not – however its still a transmission.
In that sense, a failed manifestation – one that has not been witnessed – is a transmission. Hence transmission does not deny manifestations, it allows manifestations through the possibility of some to actually pick up the frequency and interpret it.