Starling arrives at Union Station, with Mason Verger's henchmen trailing her in a black van.
Lecter, who has been sitting in his vehicle outside Union Station, gets out after both Starling and the van pass him, as if he expected someone to be following Clarice.
Once all parties are inside the station shopping area, it doesn't take long for Lecter to get a good look at the two guys who are following Clarice.
It is only after spotting the two men, that Hannibal exposes himself to plain view by getting on the carousel (though Starling still does not see him).
Lecter gets taken down - as he had planned: As depicted in the above, once Hannibal verified that Verger's men were looking around for him, he let them get a good look at him; then, as shown at left, he drew them into the mall's parking area. Lecter has succeeded in getting 'caught', fully expecting that he can later get the upper hand with Mason Verger.
