Angel appears in every season of Buffy at least once, with the exception of season 6 In season 4, which aired along side the first season of Angel he appears twice, to resolve his and Buffy's relationship issues, whereby the two agree to remain apart. (Note that David Boreanaz appears in the season 4 premier, "The Freshman", but not as Angel, rather as a man whom Buffy mistakes for Angel from a distance. ) He appears once in season 5 (not counting flashbacks), in "Forever", to console Buffy after her mother's death (He does not appear at all in season 6, after Buffy's death and resurrection, since he was distracted at the time by Darla and her pregnancy.) In season 7, he appears in the final two episodes -- at the end of "The End of Days" and the beginning of "Chosen", having arrived to give Buffy the amulet he received from Wolfram & Hart.
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