Time Weighted vs Money Weighted because, opposite, account, return, period

dkishore1

Hey guys

It says that time weighted rate of return (HPR) is a better measure because it does not take into account the timing of the cash flows.. Money weighted (IRR) on the other hand will tend to be lower than time weighted if funds are contributed into the portfolio just before a period of relatively poor portfolio performance. And the opposite is true as well.
Please explain what this means