CEO SERIES: Matt Comyn, Commonwealth Bank on its $5.1bn half-year profit, future challenges and the economy

SBS Finance Editor Ricardo Gonçalves speaks with CBA CEO Matt Comyn about the bank's $5.1bn half-year cash profit and how soon customers should expect interest rate relief following what's expected to be the first official interest rate cut in five years next week; plus Martin Lakos from Macquarie on the day's sharemarket news.