Is a 3 minute train change at Slough possible?

[whole diary]

[Ollie]

Some Mon-Thurs evening trains are timed for 2 line running, this allows Network Rail to take lines under possession at shorter notice without having a noticeable impact on customers (as trains already timetabled to take longer)

[smokey]

To be honest IF I was making such a Journey I'd NOT relay on a 3 minute connection, of course it's possible if all goes well.

I've succesfully made a Minus 2 minute connection at Birmingham New Street before, but at other times have failed to make a 50 minute connection due to late running.

Took a Steam Hauled Narrow Gauge train from Porthmadog Harbour to Blaenau Ffestiniog once hoping to make the connection at Blaenau for the Conway Valley line service.
But got held up by late trains heading to Porthmadog. All I'll say is that the Guard told the Festiniog Driver at Tan-y-Bwlch that there were passengers hoping to make the main line connection at Blaenau, I never knew that the Engines of the Ffestiniog Railway could make SO much noise or move that fast.
Got to Llandudno Junction on time! SUCH MEMORIES

[eightf48544]

Some Mon-Thurs evening trains are timed for 2 line running, this allows Network Rail to take lines under possession at shorter notice without having a noticeable impact on customers (as trains already timetabled to take longer)

Whilst they are timed for 2 line working the, where and on what line the enginering works are taking place  in relation to the crossovers between Main are Reliefs determines whther the connection can be made. If the work is stuated such that the  fast  cannot overtake the stopper before crossing over to the Reliefs it has to follow the stopper to Dolphin Junction before switching  back to the main. This means that the fast is late into Slough and you arrive in time to see the stoppers tail lights disappearing under Horlicks bridge.

The most annoying thing is when the fast has to cross to the Relief at Slough West and they let the stopper out of 4 on a single yellow so it waits at Horlicks bridge, instead of holding it until the fast has left 2 and is on the way to crossing over thus making a connection. The stopper can then leave on a green and accelerate away.