In the request to adjourn today, Nel said he wanted to put foward/explain some technical data whilst still with the same witness. Reckon this is going to be evidence of OP having tried to wipe his history on his phones or Ipads? Of course, in comms forensics, it is very difficult to do this, as the expert software can also retrieve deleted history. There may also be more damaging whatsapp texts between them for the night in question, but if so, I think he asked for the adjournment there because he wants them all to be heard together for greatest impact.
Nel obviously and sensibly saved the most compelling testimony until last, so we could have another 3 witnesses with powerful evidence to come, as he said "another 4 to 5 witnesses" and we've had 2 so far today. Mind you, how the hell can they wrap up the prosection by Thursday, as Nel said, with the sort of nit picking pointless cross examination that goes on forever like we had from Oldwage today? Notice how the Judge was more vocal today? I think she prefers to not interupt proceedings unless she absolutely has to, to preserve continuity etc, but Olwadge seemed to p*ss her off today!