David's Royal Welcome to the Engineer Planet

Ripleys_Ghost
MemberFacehuggerJune 10, 2017David's Royal Welcome to the Engineer Planet
Watching David's landing at the Engineer planet, it is plain to see that this is probably a royal welcome. You can hear horns playing, many thousands of 'Engineers' have gathered and they are waving at David's juggernaut vessel. A large Engineer flagship meets the juggernaut and they dock. Considering that the juggernaut said to be 300 meters wide, that flagship must be nearly 2 km tall.
One has to wonder whether David announced his arrival by sending a signal or if The Engineers detected his arrival. David's juggernaut would likely have been considered "lost", and its arrival would have been celebrated. Its systems would have allowed the crew to hibernate for very long periods, so it's plausible that they could have survived the great expanse of time.
There is a bit of a plot hole in that one would assume that The Engineers would have contacted their forward military base on LV-223 to find out what happened there, however.