a) the PDP-11 CPU was also implemented in TTL logic, like the Datapoint,
b) there were later implementations of the PDP-11 as NMOS microprocessors:
https://en.wikipedia.org/wiki/DEC_T-11
https://en.wikipedia.org/wiki/PDP-11#LSI-11_integrated_circu...
c) the VT100 terminal was based on the Intel 8080 microprocessor
https://en.wikipedia.org/wiki/VT100
There was appreciation and exchange between Intel and DEC.