Communication plays a vital role in Industries 4.0, Industries 5.0 and IoT. Applications and industrial processes should exchange information and process data, if possible wireless. For reliable and safe communication, the black channel approach is mostly applied, which has not to fulfil any requirements but additional features are added to the data to achieve the required reliability. The reliability assessment and the safety calculation are done beforehand. For wired communication this is suitable. In wireless communication noise and disturbances can affect the signal drastically; therefore, it is beneficial to observe the communication and to estimate the Probability of Failure per Hour (PFH) continuously in order to detect, if the safety of the communication which is normally calculated as 1% of the overall safety of the system, is violated. It also can be used to predict, when the Safety Integrity Level (SIL) is going to be crossed towards a lower SIL. If disturbances, in the sense of safety or security, act dynamically, then the communication and its protocols should be of a more dynamic nature and changes its safety features depending of the PFH-value and the predicted progress of it. The paper presents methods incorporated in adaptive protocols which change their features dynamically. The paper provides the equations for calculating the PFH value continuously. It also discusses that a black channel definition should be extended towards a grey channel and this channel should observable and maintainable.