Give this a try (the rex commands are truncated, so update them)
host=Host1* OR host=Host2* U0011502 earliest=-1d@d latest=now | rex "U0011502 Workflow '(?(?[^.]+)\.[^.]+\.[^.]+\.(?[^.]+\.[^.]+)[^']+)" | search env=CERT (job=AJob OR job= BJob OR job= C) | stats values(_time) as desired_time by job
| eval "Completion-Time"=case(mvcount(desired_time)=1 AND mvindex(desired_time,0)>=relative_time(now(),"@d"), strftime(mvindex(desired_time,0), "%d/%m/%Y %I:%M:%S %p") ,mvcount(desired_time)=1 AND mvindex(desired_time,0)<relative_time(now(),"@d"),"Not Yet completed", mvcount(desired_time)=2,strftime(mvindex(desired_time,1), "%d/%m/%Y %I:%M:%S %p"),1=1,"Unknown")
| eval "Last-Completion-Time"=case(mvcount(desired_time)=1 AND mvindex(desired_time,0)>=relative_time(now(),"@d"), null() ,mvcount(desired_time)=1 AND mvindex(desired_time,0)<relative_time(now(),"@d"),strftime(mvindex(desired_time,0), "%d/%m/%Y %I:%M:%S %p"), mvcount(desired_time)=2,strftime(mvindex(desired_time,0), "%d/%m/%Y %I:%M:%S %p"),1=1,"Unknown")
| eval Delay=if('Completion-Time'="Not Yet completed",tostring(now()-mvindex(desired_time,0),"duration"),"NA")
| table job "Completion-Time" "Last-Completion-Time" Delay | rename job as "UC4 Job"
... View more