I ended up adding the text of flytitle to h1:
Code:
if 'flyTitle' in data and data['flyTitle']:
title_text = f"{data['flyTitle']}: {data['title']}"
else:
title_text = data['title']
#E(article, 'div', data['flyTitle'] , style='color: red; font-size:small; font-weight:bold;')
E(article, 'h1', title_text, title=safe_dict(data, "url", "canonical") or '')