The lounge information is frequently incomplete. I often find myself getting to a gate as it is closing yet was showing as Gate open in the lounge. It will frequently go straight from Gate Open to closing without ever getting to Board Now in the lounge. I have fed this back at the gate and in communications with GGL and CR. Still it happens. You could go down at T-25 of course, but when you get there at that time, often they aren't ready to board. I always wonder why it is so much effort for the correct information to be in place in BA's lounge in a BA only terminal.