I have to question how Sinclair is the commander of B5 yet businessmen on the station apparently don't recognise him. Some layperson who is just passing through the station might not know what he looks like, but a businessman based on the station? I don't get it.
Would you recognize the Mayor of your city by sight?
I must have missed something major about Ivanova's backstory because I can't understand the b-story at all. She has to use back-channels in order to talk to her dying father why? I don't understand what's going on, I didn't find it particularly emotional, all it did was distract from the a-plot, not that that's such a crime in this case.
She didn't have
to do so. She simply chose to be discreet.