If you merge 21/43/44/45 (which would never happy) although it could as theyre getting electrics

The delays would be horrendous, there simily isnt enough running time for any service from Gateshead to Eldon Square and thats like 1.5 miles.

Tbh the entire 21 route is just delay, after delay with no way to make up time especially if 1 doesnt turn up or 2 break down in a ROW

---

Thinking of merging the 21/43/44/45, you could merge

X10 (GNE) /X15 (ANE)
60 GNE/ 24 GNE (with the Drifter Branding going whcih I dont agree with X20/20/20A/56/60 should be the Deptford Branded Services considering the 60 is busier than the 20)
21 & 71 both GNE
57/58/27 (GNE & SCNE 30/31/32)