(Standard 2.A.2) GIPS calculation methodology requires time-weighted rates of return that adjust for external cash flows be used. Periodic returns must be geometrically linked.
Standard 2.A.7. Composite returns must be calculated by asset-weighting individual portfolio returns using beginning of-period weightings.
How do these link together since both are required? Do we just combine them so that we time-weight the rates of return and asset-weight the portfolios?