Use 4G while being connected to a WiFi direct printer Is it possible to use 4G for internet while being connected to a wireless printer with WiFi direct?

If not, are there any alternatives to use both, the printer as well as the internet, simultaneously without requiring another WiFi access point?

(The printer in question is the Epson L3150 Wireless Printer)
This is an ongoing issue that has been described as an optional implementation of the wifi direct. Or rather a lack of implemented options. My self a team testing an app for a developer, found that some phones have an option or feature for load balancing over wifi and data as a feature. Those that have this balancing, print and access internet without issue. Those without have no data over cellular while connected to wifi.