Based on the information available, there is indeed some guidance regarding the time gap between taking Advil (ibuprofen) and aspirin. However, it's important to note that these recommendations can vary depending on the individual's health condition and the reason for taking these medications.

Generally, if you need to take both ibuprofen and aspirin, it's usually recommended to take the ibuprofen first [1]. The reason is that ibuprofen can reduce the absorption of aspirin into the bloodstream, potentially diminishing the effectiveness of aspirin [2]. By taking ibuprofen (Advil) first, you can allow some time for ibuprofen to be absorbed and start working before aspirin is introduced into the system.

However, this guidance may not apply in all situations. For instance, if you're taking aspirin for heart health purposes and your doctor has instructed you to take it daily, you should follow your doctor's advice [3]. In such cases, the benefits of regular aspirin use may outweigh the potential interaction with ibuprofen.

Remember, it's always best to consult with a healthcare provider or pharmacist for personalized advice regarding medication use and interactions [4]. This article is intended to provide general information and should not be used as a substitute for medical advice.

Sources:
[1] "Ibuprofen and aspirin: What you should know." Mayo Clinic. <https://www.mayoclinic.org/diseases-conditions/heart-disease/expert-answers/ibuprofen-and-aspirin/faq-20058089>.
[2] "Ibuprofen and aspirin interaction." Drugs.com. <https://www.drugs.com/drug-interactions/ibuprofen-and-aspirin-735-0-111-2387-131-131-131-0-2387-0>.
[3] "Ibuprofen and aspirin: What's the difference?" Medical News Today. <https://www.medicalnewstoday.com/articles/325351>.
[4] "Ibuprofen and aspirin." DrugPatentWatch.com. <https://www.drugpatentwatch.com/drugs/ibuprofen-and-aspirin>.