Zero issues experience so far - flight arrived at 4.35, 5 minute wait at carousel and was wheeling my bags out by 5.05. Dropped them with airportr (due to be delivered home around 8pm this evening) and straight through fast track into CCR. Was drinking an orange juice having showered by 5.30.

I did hear the crew on my flight back to LHR ask each other if I'd been on the outbound when I boarded. Two of them asked me if I'd been on the outbound at different times - clearly cheap ex-FRA fares are less of a thing than ex-DUB (or maybe it was the rarity of someone sitting in ET on the second leg...)