Tourism stakeholders were left unimpressed after Hong Kong officials on Tuesday once again floated the possibility of long-sought travel bubbles while once again offering no concrete timeline, warning the embattled sector is in danger of collapse if border restrictions are not lifted soon.Secretary for Commerce and Economic Development Edward Yau Tang-wah revealed the government had contacted 11 countries to pave the way for travel resumption, with six – Germany, France, Switzerland, Vietnam,…