Churchill didn't take over because Chamberlain died, he took over because Chamberlain's government fell due to his appeasment policy having turned out so badly and the string of early defeats.
Edit: Oof - text for both events is in v2.1.csv, but lack of text would not prevent an event from firing anyway.
Edit: Oof - text for both events is in v2.1.csv, but lack of text would not prevent an event from firing anyway.