I missed Bus 163 (which goes direct to my office) this morning. Instead of waiting for the next 163, I decided to take bus 86. I dropped off and changed to bus 162 to my office.
As the transfer is made at the same bus stop, it was quite convenient for me.
Actually, I took a break to have breakfast at Ang Mo Kio before taking bus 162. The two legs are considered as the same journey, so I only paid a maximum of 90 cents for the two legs of the journey.