Well, the decision is upto you but to share my experiecnes, I found the HSBC HR very rude. Kind of why to call them 'Human' Resource Managers?
HR is the face of the company they said.
INFY's HR was different. 'If you are not able to appear for the test coz of no fault of yours, it is my loss' One of them said to us. Game of words, might be.
But the former one did not even look at me when I was waiting for a meeting with the person!
Im much junior to you but I know by experience that 'To be able to be professional, one has to be working with profesionals'.
My advice on confusion, join INFY NOW if you want..if not, do not keep the 'six-month's time' business. The HR person might change, the project might end, the vacancies might fill.. anything can happen on which u or any other person might not have a control.
Also, one month's experience you can do without showing on CV. But if u leave any company at Team Lead level in 6 month's time, people will think twice before hiring you.
If you continue at the current company, do not blame yourself for making this choice sometime down the line.
Look at the bright side, you have to choose only from 2 companies right now and your chances of making to a good company is 50%.
Good Luck!
Tina