Layer 1 ends at bit encoding.
Physical Media: Any means in the physical world for transferring
signals between OSI systems. Considered to be outside the OSI Model,
and therefore sometimes referred to as "Layer 0." The physical
connector to the media can be considered as defining the bottom
interface of the Physical Layer, i.e., the bottom of the OSI
Here, and yes, we do. This is not a new thing.
One thing you have to realize about networking career folks is they are always tired and have forgotten more than many people know due to their horrible sleep habits/job requirements, so honestly, it was just a slip of the neurons. Do always ask us to verify our answers though because often we are kinda phasing in and out of reality.