
How long did Babylon 4 spend in 2258? Susan said it would take about 10 hours to evacuate the station, and that doesn’t include the 3 hours it took from Alpha 7 to return (assuming the pilot saw Babylon 4 fully stabilise at the moment he was hit by the temporal energy). Plus however long it took for Franklin to do the autopsy on the pilot. So according to what was said maybe 12-13 hours.
However once on B4 things seem to move a lot quicker. Sinclair and Garibaldi board the station, get attacked by the crazed officer, met with Krantz and then Zathras which appears to only last a few minutes, though just before this the first load of people are evacuated and Babylon 5 launches its second batch of shuttles and escort fighters.. Then Zathras runs to the One and gives him the time stabiliser, which causes him to vanish (?), after which Garibaldi goes and helps the rest of the evacuation. Sinclair continues the interrogation of Zathras, which seems to only go on for a few more minutes, before they all leave, Zathras gets pinned down, everyone else flees just as the station vanishes. To me it seems like not more than two hours has gone by since they first arrived. Granted there are times when it could be dragged out but the dialogue doesn’t seem to support this.
Is Babylon 5 in Sector 14 too? If it only takes three hours in normal space, even at maximum burn that would surely only get you across a solar system? In In The Beginning we see Babylon 1 being built in orbit of a planet which looks a lot like Epsilon 3. Epsilon 4 maybe...?
Finally, it’s been said that parts of Babylon 3 were recycled into Babylon 4, and that some emblems are visible in Babylon 4 from B3. Is there any evidence of this on screen? I’ve never seen the logos, then again I’m not 100% sure what B3 looks like, I only found this image:

Compared to the B4 logo:

Which appears quite common across the station.
Thanks!