NB! It seems this console command is not compatible with CS2.
Command Profile

MP_GGTR_HALFTIME_DELAY

CS:GO

This command sets the halftime "break" or "delay" duration for TR mode. Default is 0 (half time disabled).

Syntax
mp_ggtr_halftime_delay [Seconds]

Description

This command sets the halftime "break" or "delay" duration for TR mode. Default is 0 (half time disabled).

Syntax And Arguments

mp_ggtr_halftime_delay [Seconds]
Seconds The amount of time, in seconds, that half time should last for.