The Christmas rom-com has fallen on tough times. After decades of essentially printing money, the genre abruptly ran out of box-office steam sometime pre-Brexit but post-Port Tunnel. The pivot to Netflix could be the blame, says you, as may be the impressive churn-out rate of leading ladies named Jennifer that Hollywood seems to have on tap, but one Christmas rom-com seems to rule them all, and that is Richard Curtis’ Tinseltown juggernaut, Love Actually. I...